diff --git a/CMakeLists.txt b/CMakeLists.txt
index b12c00f29f..8704645c6e 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -581,10 +581,6 @@ ENDIF ()
 SET (HAVE_HTMLHELPW 1)
 ENDIF (WIN32)
 
-IF (NOT WIN32)
-CHECK_INCLUDE_FILES (X11/Xlib.h HAVE_X11_XLIB_H)
-ENDIF (NOT WIN32)
-
 CHECK_INCLUDE_FILES (dirent.h HAVE_DIRENT_H)
 CHECK_INCLUDE_FILES (dlfcn.h HAVE_DLFCN_H)
 CHECK_INCLUDE_FILES (glob.h HAVE_GLOB_H)
diff --git a/common/config.h.cmake.in b/common/config.h.cmake.in
index 34e7e9c348..200b129d73 100644
--- a/common/config.h.cmake.in
+++ b/common/config.h.cmake.in
@@ -264,9 +264,6 @@
 /* Define to 1 if you have the <wctype.h> header file. */
 #cmakedefine HAVE_WCTYPE_H 1
 
-/* Define to 1 if you have the <X11/Xlib.h> header file. */
-#cmakedefine HAVE_X11_XLIB_H 1
-
 /* Define to 1 if you have the file `/usr/include/gmock/gmock.h'. */
 #cmakedefine HAVE__USR_INCLUDE_GMOCK_GMOCK_H
 
diff --git a/configure.ac b/configure.ac
index b7867589ca..c77e51b48c 100644
--- a/configure.ac
+++ b/configure.ac
@@ -486,15 +486,10 @@ AM_CONDITIONAL(PLATFORM_OSX_QUARTZ, test "x$platform" = "xdarwin/quartz")
 AM_CONDITIONAL(PLATFORM_WIN32, test "x$platform" = "xwin32")
 AM_CONDITIONAL(OS_WIN32, test "x$native_win32" = "xyes")
 
-# These are unavailable on windows/mingw32 and X11 isn't desired or
+# These are unavailable on windows/mingw32
 # required for MacOSX Quartz
-if test "x$_gdk_tgt" = xquartz;
-then
-    AC_CHECK_HEADERS(glob.h)
-else
-    AC_CHECK_HEADERS(X11/Xlib.h glob.h)
-fi
-AM_CONDITIONAL(HAVE_X11_XLIB_H, test "x$ac_cv_header_X11_Xlib_h" = "xyes")
+AC_CHECK_HEADERS(glob.h)
+
 AC_CHECK_FUNCS(chown gethostname getppid getuid gettimeofday gmtime_r)
 AC_CHECK_FUNCS(gethostid link)
 ##################################################
diff --git a/gnucash/gnome-utils/Makefile.am b/gnucash/gnome-utils/Makefile.am
index c2ea84f3ea..4cfba43a16 100644
--- a/gnucash/gnome-utils/Makefile.am
+++ b/gnucash/gnome-utils/Makefile.am
@@ -217,10 +217,6 @@ gnc-warnings.c: gschemas/org.gnucash.warnings.gschema.xml.in make-gnc-warnings-c
 gnc-warnings.h: gschemas/org.gnucash.warnings.gschema.xml.in make-gnc-warnings-h.xsl
 	$(XSLTPROC) -o $@ $(srcdir)/make-gnc-warnings-h.xsl $<
 
-if HAVE_X11_XLIB_H
-  libgncmod_gnome_utils_la_LIBADD += -lX11
-endif
-
 if BUILDING_FROM_VCS
 swig-gnome-utils.c: gnome-utils.i \
                     ${top_srcdir}/common/base-typemaps.i
diff --git a/gnucash/gnome-utils/gnc-gnome-utils.c b/gnucash/gnome-utils/gnc-gnome-utils.c
index 8f931f3fff..85a934b307 100644
--- a/gnucash/gnome-utils/gnc-gnome-utils.c
+++ b/gnucash/gnome-utils/gnc-gnome-utils.c
@@ -24,9 +24,6 @@
 #include <config.h>
 
 #include <glib/gi18n.h>
-#ifdef HAVE_X11_XLIB_H
-# include <X11/Xlib.h>
-#endif
 #include <libxml/xmlIO.h>
 
 #include "gnc-prefs-utils.h"
@@ -640,28 +637,6 @@ gnc_ui_check_events (gpointer not_used)
     return TRUE;
 }
 
-#ifdef HAVE_X11_XLIB_H
-static int
-gnc_x_error (Display *display, XErrorEvent *error)
-{
-    if (error->error_code)
-    {
-        char buf[64];
-
-        XGetErrorText (display, error->error_code, buf, 63);
-
-        g_warning ("X-ERROR **: %s\n  serial %ld error_code %d "
-                   "request_code %d minor_code %d\n",
-                   buf,
-                   error->serial,
-                   error->error_code,
-                   error->request_code,
-                   error->minor_code);
-    }
-
-    return 0;
-}
-#endif
 
 int
 gnc_ui_start_event_loop (void)
@@ -673,10 +648,6 @@ gnc_ui_start_event_loop (void)
     id = g_timeout_add_full (G_PRIORITY_DEFAULT_IDLE, 10000, /* 10 secs */
                              gnc_ui_check_events, NULL, NULL);
 
-#ifdef HAVE_X11_XLIB_H
-    XSetErrorHandler (gnc_x_error);
-#endif
-
     /* Enter gnome event loop */
     gtk_main ();