diff --git a/src/Magnum/Platform/AbstractXApplication.h b/src/Magnum/Platform/AbstractXApplication.h
index 1231ccc64a..2496fcdc52 100644
--- a/src/Magnum/Platform/AbstractXApplication.h
+++ b/src/Magnum/Platform/AbstractXApplication.h
@@ -40,6 +40,7 @@
 #include <X11/Xutil.h>
 /* undef Xlib nonsense to avoid conflicts */
 #undef Always
+#undef Bool
 #undef Complex
 #undef Convex
 #undef None
@@ -51,6 +52,9 @@
 #undef Button4
 #undef Button5
 
+/* Unfortunately Xlib *needs* the Bool type, so provide a typedef instead */
+typedef int Bool;
+
 #include "Magnum/Magnum.h"
 #include "Magnum/Tags.h"
 #include "Magnum/GL/GL.h"
diff --git a/src/Magnum/Platform/WindowlessEglApplication.h b/src/Magnum/Platform/WindowlessEglApplication.h
index dd250f2b4f..1aafc283c4 100644
--- a/src/Magnum/Platform/WindowlessEglApplication.h
+++ b/src/Magnum/Platform/WindowlessEglApplication.h
@@ -37,12 +37,16 @@
 #include <EGL/eglext.h>
 /* undef Xlib nonsense to avoid conflicts */
 #undef Always
+#undef Bool
 #undef Complex
 #undef None
 #undef Status
 #include <Corrade/Containers/EnumSet.h>
 #include <Corrade/Containers/Pointer.h>
 
+/* Unfortunately Xlib *needs* the Bool type, so provide a typedef instead */
+typedef int Bool;
+
 #include "Magnum/Magnum.h"
 #include "Magnum/GL/OpenGL.h"
 #include "Magnum/Tags.h"
diff --git a/src/Magnum/Platform/WindowlessGlxApplication.h b/src/Magnum/Platform/WindowlessGlxApplication.h
index 6f3fcf1d2c..9779e39fca 100644
--- a/src/Magnum/Platform/WindowlessGlxApplication.h
+++ b/src/Magnum/Platform/WindowlessGlxApplication.h
@@ -46,6 +46,7 @@
 #include <X11/Xutil.h>
 /* undef Xlib nonsense to avoid conflicts */
 #undef Always
+#undef Bool
 #undef Complex
 #undef Convex
 #undef None
@@ -57,6 +58,9 @@
 #undef Button4
 #undef Button5
 
+/* Unfortunately Xlib *needs* the Bool type, so provide a typedef instead */
+typedef int Bool;
+
 namespace Magnum { namespace Platform {
 
 /**