diff --git a/Makefile b/Makefile
index 3225e36..2a2e3ec 100644
--- a/Makefile
+++ b/Makefile
@@ -1,4 +1,4 @@
-CFLAGS = -Wall -Wextra -pedantic -lX11 -lXft -I/usr/include/freetype2 -pthread
+CFLAGS = -Wall -Wextra -pedantic -lX11 -lXft -lXinerama -I/usr/include/freetype2 -pthread
 
 PREFIX ?= /usr/local
 CC ?= cc
diff --git a/herbe.c b/herbe.c
index 51d3990..d0aae01 100644
--- a/herbe.c
+++ b/herbe.c
@@ -1,5 +1,6 @@
 #include <X11/Xlib.h>
 #include <X11/Xft/Xft.h>
+#include <X11/extensions/Xinerama.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <signal.h>
@@ -19,6 +20,9 @@ Display *display;
 Window window;
 int exit_code = EXIT_DISMISS;
 
+#define max(a, b) (((a) > (b)) ? (a) : (b))
+#define min(a, b) (((a) < (b)) ? (a) : (b))
+
 static void die(const char *format, ...)
 {
 	va_list ap;
@@ -110,10 +114,58 @@ int main(int argc, char *argv[])
 	int screen = DefaultScreen(display);
 	Visual *visual = DefaultVisual(display, screen);
 	Colormap colormap = DefaultColormap(display, screen);
-
-	int screen_width = DisplayWidth(display, screen);
-	int screen_height = DisplayHeight(display, screen);
-
+    
+    Window focused_window;
+    {
+        int ignored;
+        XGetInputFocus(display, &focused_window, &ignored);
+    }
+    
+    XWindowAttributes attr;
+    XGetWindowAttributes(display, focused_window, &attr);
+    
+    int num_screens;
+    XineramaScreenInfo *info = XineramaQueryScreens(display, &num_screens);
+    
+    // Find the monitor the focused window is on.
+    int mon = 0;
+    int max_area = 0;
+    for (int idx = 0; idx < num_screens; idx += 1)
+    {
+        XineramaScreenInfo *at = info + idx;
+        
+        int r0x0 = at->x_org;
+        int r0y0 = at->y_org;
+        int r0x1 = at->x_org + at->width;
+        int r0y1 = at->y_org + at->height;
+        
+        int r1x0 = attr.x;
+        int r1y0 = attr.y;
+        int r1x1 = attr.x + (attr.width + attr.border_width*2);
+        int r1y1 = attr.y + (attr.height + attr.border_width*2);
+        
+        // Intersect
+        int x0 = max(r0x0, r1x0);
+        int x1 = min(r0x1, r1x1);
+        int y0 = max(r0y0, r1y0);
+        int y1 = min(r0y1, r1y1);
+        
+        int area = (x1 - x0)*(y1 - y0);
+        if(area > max_area)
+        {
+            max_area = area;
+            mon = idx;
+        }
+    }
+    
+    int mon_x = info[mon].x_org;
+    int mon_y = info[mon].y_org;
+    
+	int screen_width = info[mon].width;
+	int screen_height = info[mon].height;
+    
+    XFree(info);
+    
 	XSetWindowAttributes attributes;
 	attributes.override_redirect = True;
 	XftColor color;
@@ -161,8 +213,8 @@ int main(int argc, char *argv[])
 
 	if (corner == BOTTOM_LEFT || corner == BOTTOM_RIGHT)
 		y = screen_height - height - border_size * 2 - pos_y;
-
-	window = XCreateWindow(display, RootWindow(display, screen), x, y, width, height, border_size, DefaultDepth(display, screen),
+    
+	window = XCreateWindow(display, RootWindow(display, screen), mon_x + x, mon_y + y, width, height, border_size, DefaultDepth(display, screen),
 						   CopyFromParent, visual, CWOverrideRedirect | CWBackPixel | CWBorderPixel, &attributes);
 
 	XftDraw *draw = XftDrawCreate(display, window, visual, colormap);