diff --git a/ChangeLog b/ChangeLog
index 03c7d95..76afd61 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+2018-12-02 Fred Kiefer <FredKiefer@gmx.de>
+
+	* Source/gsc/GSGState.m (-setColor:state:): Don't copy values onto themselves.
+
 2018-09-16  Fred Kiefer <FredKiefer@gmx.de>
 
 	* Source/opal/OpalContext.m (-initWithGraphicsPort:flipped:): Implement.
diff --git a/Source/gsc/GSGState.m b/Source/gsc/GSGState.m
index e71de15..7fec7eb 100644
--- a/Source/gsc/GSGState.m
+++ b/Source/gsc/GSGState.m
@@ -130,10 +130,14 @@
     in the current color */
 - (void) setColor: (device_color_t *)color state: (color_state_t)cState
 {
-  if (cState & COLOR_FILL)
-    fillColor = *color;
-  if (cState & COLOR_STROKE)
-    strokeColor = *color;
+  if ((cState & COLOR_FILL) && (&fillColor != color))
+    {
+      fillColor = *color;
+    }
+  if ((cState & COLOR_STROKE) && (&strokeColor != color))
+    {
+      strokeColor = *color;
+    }
   cstate = cState;
   DESTROY(pattern);
 }