diff --git a/ChangeLog b/ChangeLog
index 850297f07..2df330a45 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2008-02-12  Adam Fedor  <fedor@gnu.org>
+
+	* Source/GSFusedSilicaContext.m: Make sure to allocate a
+	mutable dictionary.
+
 2008-02-12 Fred Kiefer <FredKiefer@gmx.de>
 
 	* Source/NSFont.m (-initWithName:matrix:fix:screenFont:role:): Add
diff --git a/Source/GSFusedSilicaContext.m b/Source/GSFusedSilicaContext.m
index 2e1209343..81fb49d1b 100644
--- a/Source/GSFusedSilicaContext.m
+++ b/Source/GSFusedSilicaContext.m
@@ -44,7 +44,7 @@
 + (CGColorSpaceRef) CGColorSpaceCreateDeviceGray
 {
   NSMutableDictionary *space;
-  space = [NSDictionary dictionaryWithObject: NSDeviceWhiteColorSpace
+  space = [NSMutableDictionary dictionaryWithObject: NSDeviceWhiteColorSpace
 			forKey: GSColorSpaceName];
   [space setObject: NUMBER(1) forKey: GSColorSpaceComponents];
   return space;
@@ -53,7 +53,7 @@
 + (CGColorSpaceRef) CGColorSpaceCreateDeviceRGB
 {
   NSMutableDictionary *space;
-  space = [NSDictionary dictionaryWithObject: NSDeviceRGBColorSpace
+  space = [NSMutableDictionary dictionaryWithObject: NSDeviceRGBColorSpace
 			forKey: GSColorSpaceName];
   [space setObject: NUMBER(3) forKey: GSColorSpaceComponents];
   return space;
@@ -62,7 +62,7 @@
 + (CGColorSpaceRef) CGColorSpaceCreateDeviceCMYK
 {
   NSMutableDictionary *space;
-  space = [NSDictionary dictionaryWithObject: NSDeviceCMYKColorSpace
+  space = [NSMutableDictionary dictionaryWithObject: NSDeviceCMYKColorSpace
 			forKey: GSColorSpaceName];
   [space setObject: NUMBER(4) forKey: GSColorSpaceComponents];
   return space;
@@ -73,7 +73,7 @@
 						    : (float)gamma
 {
   NSMutableDictionary *space;
-  space = [NSDictionary dictionaryWithObject: NSCalibratedWhiteColorSpace
+  space = [NSMutableDictionary dictionaryWithObject: NSCalibratedWhiteColorSpace
 			forKey: GSColorSpaceName];
   [space setObject: FLOAT_ARRAY(whitePoint, 3) forKey: GSColorSpaceWhitePoint];
   [space setObject: FLOAT_ARRAY(blackPoint, 3) forKey: GSColorSpaceBlackPoint];
@@ -87,7 +87,7 @@
 						   : (const float *)matrix
 {
   NSMutableDictionary *space;
-  space = [NSDictionary dictionaryWithObject: NSCalibratedRGBColorSpace
+  space = [NSMutableDictionary dictionaryWithObject: NSCalibratedRGBColorSpace
 			forKey: GSColorSpaceName];
   [space setObject: FLOAT_ARRAY(whitePoint, 3) forKey: GSColorSpaceWhitePoint];
   [space setObject: FLOAT_ARRAY(blackPoint, 3) forKey: GSColorSpaceBlackPoint];
@@ -102,7 +102,7 @@
 					 : (const float *) range
 {
   NSMutableDictionary *space;
-  space = [NSDictionary dictionaryWithObject: @"NSLabColorSpace"
+  space = [NSMutableDictionary dictionaryWithObject: @"NSLabColorSpace"
 			forKey: GSColorSpaceName];
   [space setObject: FLOAT_ARRAY(whitePoint, 3) forKey: GSColorSpaceWhitePoint];
   [space setObject: FLOAT_ARRAY(blackPoint, 3) forKey: GSColorSpaceBlackPoint];