diff --git a/configure.ac b/configure.ac
index 84f222b3..3fe964ed 100644
--- a/configure.ac
+++ b/configure.ac
@@ -9,6 +9,19 @@ AC_PROG_CC
 AC_PROG_CC_STDC
 AM_PROG_CC_C_O
 
+##
+# I3 check
+##
+AC_CHECK_HEADERS([i3/ipc.h],
+	[i3_header=yes; break;])
+
+AS_IF([test "x$i3_header" != xno],
+    [
+    AM_CONDITIONAL(I3, true)
+    AC_DEFINE(I3, [], [Support for I3])
+    ], [
+    AM_CONDITIONAL(I3, false)
+    ])
 ##
 # Check dependencies
 ##
diff --git a/source/rofi.c b/source/rofi.c
index f4e659c4..ae3090d3 100644
--- a/source/rofi.c
+++ b/source/rofi.c
@@ -26,6 +26,7 @@
  *
  */
 
+#include <config.h>
 #define _GNU_SOURCE
 #include <stdio.h>
 #include <stdlib.h>
@@ -69,7 +70,6 @@
 
 #include "xrmoptions.h"
 
-#include <config.h>
 
 #define LINE_MARGIN 4
 
@@ -435,7 +435,7 @@ int take_keyboard( Window w )
             return 1;
 
 
-        struct timespec rsl = { 1, 0L };
+        struct timespec rsl = { 0, 100000L };
         nanosleep(&rsl, NULL);
     }