diff --git a/charts/logging-operator/charts/logging-operator-crds/templates/logging.banzaicloud.io_loggings.yaml b/charts/logging-operator/charts/logging-operator-crds/templates/logging.banzaicloud.io_loggings.yaml
index 60364329e..767cf419c 100644
--- a/charts/logging-operator/charts/logging-operator-crds/templates/logging.banzaicloud.io_loggings.yaml
+++ b/charts/logging-operator/charts/logging-operator-crds/templates/logging.banzaicloud.io_loggings.yaml
@@ -12215,6 +12215,8 @@ spec:
                     properties:
                       log_level:
                         type: string
+                      log_msg_size:
+                        type: integer
                       stats:
                         properties:
                           freq:
diff --git a/charts/logging-operator/charts/logging-operator-crds/templates/logging.banzaicloud.io_syslogngconfigs.yaml b/charts/logging-operator/charts/logging-operator-crds/templates/logging.banzaicloud.io_syslogngconfigs.yaml
index 49eb8884d..1f7bad550 100644
--- a/charts/logging-operator/charts/logging-operator-crds/templates/logging.banzaicloud.io_syslogngconfigs.yaml
+++ b/charts/logging-operator/charts/logging-operator-crds/templates/logging.banzaicloud.io_syslogngconfigs.yaml
@@ -4216,6 +4216,8 @@ spec:
                 properties:
                   log_level:
                     type: string
+                  log_msg_size:
+                    type: integer
                   stats:
                     properties:
                       freq:
diff --git a/charts/logging-operator/crds/logging.banzaicloud.io_loggings.yaml b/charts/logging-operator/crds/logging.banzaicloud.io_loggings.yaml
index c214b6bf1..f43bda2cf 100644
--- a/charts/logging-operator/crds/logging.banzaicloud.io_loggings.yaml
+++ b/charts/logging-operator/crds/logging.banzaicloud.io_loggings.yaml
@@ -12212,6 +12212,8 @@ spec:
                     properties:
                       log_level:
                         type: string
+                      log_msg_size:
+                        type: integer
                       stats:
                         properties:
                           freq:
diff --git a/charts/logging-operator/crds/logging.banzaicloud.io_syslogngconfigs.yaml b/charts/logging-operator/crds/logging.banzaicloud.io_syslogngconfigs.yaml
index 7b40df7e8..79d73eb89 100644
--- a/charts/logging-operator/crds/logging.banzaicloud.io_syslogngconfigs.yaml
+++ b/charts/logging-operator/crds/logging.banzaicloud.io_syslogngconfigs.yaml
@@ -4213,6 +4213,8 @@ spec:
                 properties:
                   log_level:
                     type: string
+                  log_msg_size:
+                    type: integer
                   stats:
                     properties:
                       freq:
diff --git a/config/crd/bases/logging.banzaicloud.io_loggings.yaml b/config/crd/bases/logging.banzaicloud.io_loggings.yaml
index c214b6bf1..f43bda2cf 100644
--- a/config/crd/bases/logging.banzaicloud.io_loggings.yaml
+++ b/config/crd/bases/logging.banzaicloud.io_loggings.yaml
@@ -12212,6 +12212,8 @@ spec:
                     properties:
                       log_level:
                         type: string
+                      log_msg_size:
+                        type: integer
                       stats:
                         properties:
                           freq:
diff --git a/config/crd/bases/logging.banzaicloud.io_syslogngconfigs.yaml b/config/crd/bases/logging.banzaicloud.io_syslogngconfigs.yaml
index 7b40df7e8..79d73eb89 100644
--- a/config/crd/bases/logging.banzaicloud.io_syslogngconfigs.yaml
+++ b/config/crd/bases/logging.banzaicloud.io_syslogngconfigs.yaml
@@ -4213,6 +4213,8 @@ spec:
                 properties:
                   log_level:
                     type: string
+                  log_msg_size:
+                    type: integer
                   stats:
                     properties:
                       freq:
diff --git a/docs/configuration/crds/v1beta1/syslogng_types.md b/docs/configuration/crds/v1beta1/syslogng_types.md
index 3fb3f98b2..4c145e495 100644
--- a/docs/configuration/crds/v1beta1/syslogng_types.md
+++ b/docs/configuration/crds/v1beta1/syslogng_types.md
@@ -143,6 +143,11 @@ SyslogNGTLS defines the TLS configs
 See the [AxoSyslog Core documentation](https://axoflow.com/docs/axosyslog-core/chapter-global-options/reference-options/#global-options-log-level). 
 
 
+### log_msg_size (*int, optional) {#globaloptions-log_msg_size}
+
+The maximum size of a message in bytes. Defaults to syslog-ng's built-in default of 8192 when unset. See the [AxoSyslog Core documentation](https://axoflow.com/docs/axosyslog-core/chapter-global-options/reference-options/#global-option-log-msg-size). 
+
+
 ### stats (*Stats, optional) {#globaloptions-stats}
 
 See the [AxoSyslog Core documentation](https://axoflow.com/docs/axosyslog-core/chapter-global-options/reference-options/#global-option-stats). 
diff --git a/pkg/sdk/logging/api/v1beta1/syslogng_types.go b/pkg/sdk/logging/api/v1beta1/syslogng_types.go
index ace85b9d8..38323a3fb 100644
--- a/pkg/sdk/logging/api/v1beta1/syslogng_types.go
+++ b/pkg/sdk/logging/api/v1beta1/syslogng_types.go
@@ -120,6 +120,9 @@ type GlobalOptions struct {
 	Stats *Stats `json:"stats,omitempty"`
 	// See the [AxoSyslog Core documentation](https://axoflow.com/docs/axosyslog-core/chapter-global-options/reference-options/#global-options-log-level).
 	LogLevel *string `json:"log_level,omitempty"`
+	// The maximum size of a message in bytes. Defaults to syslog-ng's built-in default of 8192 when unset.
+	// See the [AxoSyslog Core documentation](https://axoflow.com/docs/axosyslog-core/chapter-global-options/reference-options/#global-option-log-msg-size).
+	LogMsgSize *int `json:"log_msg_size,omitempty"`
 }
 
 type Stats struct {
diff --git a/pkg/sdk/logging/api/v1beta1/zz_generated.deepcopy.go b/pkg/sdk/logging/api/v1beta1/zz_generated.deepcopy.go
index e33049759..e81ba25b2 100644
--- a/pkg/sdk/logging/api/v1beta1/zz_generated.deepcopy.go
+++ b/pkg/sdk/logging/api/v1beta1/zz_generated.deepcopy.go
@@ -1910,6 +1910,11 @@ func (in *GlobalOptions) DeepCopyInto(out *GlobalOptions) {
 		*out = new(string)
 		**out = **in
 	}
+	if in.LogMsgSize != nil {
+		in, out := &in.LogMsgSize, &out.LogMsgSize
+		*out = new(int)
+		**out = **in
+	}
 }
 
 // DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new GlobalOptions.
diff --git a/pkg/sdk/logging/model/syslogng/config/config_test.go b/pkg/sdk/logging/model/syslogng/config/config_test.go
index 3ceabaf54..047d3b483 100644
--- a/pkg/sdk/logging/model/syslogng/config/config_test.go
+++ b/pkg/sdk/logging/model/syslogng/config/config_test.go
@@ -358,6 +358,36 @@ options {
     stats(level(3) freq(0));
 };
 
+source "main_input" {
+    channel {
+        source {
+            network(flags("no-parse") port(601) transport("tcp"));
+        };
+        parser {
+            json-parser(prefix("json."));
+        };
+    };
+};
+`,
+		},
+		"global options log_msg_size": {
+			input: Input{
+				SyslogNGSpec: &v1beta1.SyslogNGSpec{
+					GlobalOptions: &v1beta1.GlobalOptions{
+						LogMsgSize: amp(32768),
+					},
+				},
+				SourcePort:          601,
+				SecretLoaderFactory: &TestSecretLoaderFactory{},
+			},
+			wantOut: `@version: current
+
+@include "scl.conf"
+
+options {
+    log_msg_size(32768);
+};
+
 source "main_input" {
     channel {
         source {