diff --git a/WINGs/dragdestination.c b/WINGs/dragdestination.c
index a3ce8713..a7881405 100644
--- a/WINGs/dragdestination.c
+++ b/WINGs/dragdestination.c
@@ -599,7 +599,7 @@ static void dragSourceResponseTimeOut(void *destView)
 	W_DragDestinationInfoClear(info);
 }
 
-void W_DragDestinationStopTimer()
+void W_DragDestinationStopTimer(void)
 {
 	if (dndDestinationTimer != NULL) {
 		WMDeleteTimerHandler(dndDestinationTimer);
diff --git a/WINGs/dragsource.c b/WINGs/dragsource.c
index bc77c126..d70d7993 100644
--- a/WINGs/dragsource.c
+++ b/WINGs/dragsource.c
@@ -1080,7 +1080,7 @@ static void dragSourceResponseTimeOut(void *source)
 	}
 }
 
-void W_DragSourceStopTimer()
+void W_DragSourceStopTimer(void)
 {
 	if (dndSourceTimer != NULL) {
 		WMDeleteTimerHandler(dndSourceTimer);
diff --git a/WINGs/userdefaults.c b/WINGs/userdefaults.c
index 27c9610e..f5a56d2d 100644
--- a/WINGs/userdefaults.c
+++ b/WINGs/userdefaults.c
@@ -46,7 +46,7 @@ static void synchronizeUserDefaults(void *foo);
 #define UD_SYNC_INTERVAL	2000
 #endif
 
-const char *wusergnusteppath()
+const char *wusergnusteppath(void)
 {
 	static const char subdir[] = "/" GSUSER_SUBDIR;
 	static char *path = NULL;
diff --git a/WINGs/wapplication.c b/WINGs/wapplication.c
index 867a8755..07164ec0 100644
--- a/WINGs/wapplication.c
+++ b/WINGs/wapplication.c
@@ -83,7 +83,7 @@ void WMSetResourcePath(const char *path)
 	WMApplication.resourcePath = wstrdup(path);
 }
 
-char *WMGetApplicationName()
+char *WMGetApplicationName(void)
 {
 	return WMApplication.applicationName;
 }
diff --git a/WINGs/wutil.c b/WINGs/wutil.c
index 4becac9e..6125a384 100644
--- a/WINGs/wutil.c
+++ b/WINGs/wutil.c
@@ -5,7 +5,7 @@
 
 #include "WINGsP.h"
 
-void WHandleEvents()
+void WHandleEvents(void)
 {
 	/* Check any expired timers */
 	W_CheckTimerHandlers();