diff --git a/WPrefs.app/Makefile.am b/WPrefs.app/Makefile.am
index 15f0b6e8..22a9628c 100644
--- a/WPrefs.app/Makefile.am
+++ b/WPrefs.app/Makefile.am
@@ -36,7 +36,6 @@ WPrefs_SOURCES = \
 	WindowHandling.c \
 	Workspace.c \
 	double.c \
-	double.h \
 	editmenu.c \
 	editmenu.h \
 	xmodifier.c
diff --git a/WPrefs.app/MouseSettings.c b/WPrefs.app/MouseSettings.c
index b684c5ce..5409108a 100644
--- a/WPrefs.app/MouseSettings.c
+++ b/WPrefs.app/MouseSettings.c
@@ -28,8 +28,6 @@
 #include <unistd.h>
 #include <math.h>
 
-/* double-click tester */
-#include "double.h"
 
 #define XSET	"xset"
 
diff --git a/WPrefs.app/WPrefs.h b/WPrefs.app/WPrefs.h
index 2987abfc..ef64556b 100644
--- a/WPrefs.app/WPrefs.h
+++ b/WPrefs.app/WPrefs.h
@@ -111,6 +111,12 @@ void SetBoolForKey(Bool value, const char *defaultName);
 void SetSpeedForKey(int speed, const char *defaultName);
 
 
+/* ---[ double.c ] ------------------------------------------------------- */
+typedef struct W_DoubleTest DoubleTest;
+
+DoubleTest *CreateDoubleTest(WMWidget *parent, char *text);
+
+
 /* ---[ main.c ] --------------------------------------------------------- */
 void AddDeadChildHandler(pid_t pid, void (*handler)(void*), void *data);
 
diff --git a/WPrefs.app/double.c b/WPrefs.app/double.c
index d708b0d8..3db5748f 100644
--- a/WPrefs.app/double.c
+++ b/WPrefs.app/double.c
@@ -5,8 +5,8 @@
  */
 
 #include <WINGs/WINGsP.h>
+#include "WPrefs.h"
 
-#include "double.h"
 
 typedef struct W_DoubleTest {
 	W_Class widgetClass;
diff --git a/WPrefs.app/double.h b/WPrefs.app/double.h
deleted file mode 100644
index 3d0b8132..00000000
--- a/WPrefs.app/double.h
+++ /dev/null
@@ -1,6 +0,0 @@
-
-typedef struct W_DoubleTest DoubleTest;
-
-
-DoubleTest *CreateDoubleTest(WMWidget *parent, char *text);
-