diff --git a/JavaScriptCore/ChangeLog b/JavaScriptCore/ChangeLog
index 4c9e4cfdd84ada9ded05a538019eebb13979072d..9914a91783bc354b7864285812f6b9ca2d40c396 100644
--- a/JavaScriptCore/ChangeLog
+++ b/JavaScriptCore/ChangeLog
@@ -1,3 +1,9 @@
+2009-10-01  Mark Rowe  <mrowe@apple.com>
+
+        Fix the Tiger build.  Don't unconditionally enable 3D canvas as it is not supported on Tiger.
+
+        * Configurations/FeatureDefines.xcconfig:
+
 2009-10-01  Yongjun Zhang  <yongjun.zhang@nokia.com>
 
         Reviewed by Darin Adler.
diff --git a/JavaScriptCore/Configurations/FeatureDefines.xcconfig b/JavaScriptCore/Configurations/FeatureDefines.xcconfig
index 9a37a6396e8a2d60a2213a89ca8080c65a5f0713..ed387aa242c9473240314a8ea48990dc5a2a77a5 100644
--- a/JavaScriptCore/Configurations/FeatureDefines.xcconfig
+++ b/JavaScriptCore/Configurations/FeatureDefines.xcconfig
@@ -28,7 +28,9 @@
 
 // Set any ENABLE_FEATURE_NAME macro to an empty string to disable that feature.
 
-ENABLE_3D_CANVAS = ;
+ENABLE_3D_CANVAS = $(ENABLE_3D_CANVAS_$(MAC_OS_X_VERSION_MAJOR));
+ENABLE_3D_CANVAS_1050 = ENABLE_3D_CANVAS;
+ENABLE_3D_CANVAS_1060 = ENABLE_3D_CANVAS;
 
 ENABLE_3D_RENDERING = $(ENABLE_3D_RENDERING_$(MAC_OS_X_VERSION_MAJOR));
 ENABLE_3D_RENDERING_1050 = ENABLE_3D_RENDERING;
diff --git a/WebCore/ChangeLog b/WebCore/ChangeLog
index 44b8d00ad5e6c7df487f27e3773328ad68582ad6..11acf951d89c06ad2aad74932c11f131c682e106 100644
--- a/WebCore/ChangeLog
+++ b/WebCore/ChangeLog
@@ -1,3 +1,9 @@
+2009-10-01  Mark Rowe  <mrowe@apple.com>
+
+        Fix the Tiger build.  Don't unconditionally enable 3D canvas as it is not supported on Tiger.
+
+        * Configurations/FeatureDefines.xcconfig:
+
 2009-10-01  Chris Marrin  <cmarrin@apple.com>
 
         Reviewed by Oliver Hunt.
diff --git a/WebCore/Configurations/FeatureDefines.xcconfig b/WebCore/Configurations/FeatureDefines.xcconfig
index ffc412e218ebc9fc4b323cd6ca5d14c438900bef..ed387aa242c9473240314a8ea48990dc5a2a77a5 100644
--- a/WebCore/Configurations/FeatureDefines.xcconfig
+++ b/WebCore/Configurations/FeatureDefines.xcconfig
@@ -28,7 +28,9 @@
 
 // Set any ENABLE_FEATURE_NAME macro to an empty string to disable that feature.
 
-ENABLE_3D_CANVAS = ENABLE_3D_CANVAS;
+ENABLE_3D_CANVAS = $(ENABLE_3D_CANVAS_$(MAC_OS_X_VERSION_MAJOR));
+ENABLE_3D_CANVAS_1050 = ENABLE_3D_CANVAS;
+ENABLE_3D_CANVAS_1060 = ENABLE_3D_CANVAS;
 
 ENABLE_3D_RENDERING = $(ENABLE_3D_RENDERING_$(MAC_OS_X_VERSION_MAJOR));
 ENABLE_3D_RENDERING_1050 = ENABLE_3D_RENDERING;
diff --git a/WebKit/mac/ChangeLog b/WebKit/mac/ChangeLog
index 19752164f8a1a53e94b3946a1701953688713ba7..f7568d021acf3494f88bc49cbc4005e8b09bf902 100644
--- a/WebKit/mac/ChangeLog
+++ b/WebKit/mac/ChangeLog
@@ -1,3 +1,9 @@
+2009-10-01  Mark Rowe  <mrowe@apple.com>
+
+        Fix the Tiger build.  Don't unconditionally enable 3D canvas as it is not supported on Tiger.
+
+        * Configurations/FeatureDefines.xcconfig:
+
 2009-10-01  Chris Marrin  <cmarrin@apple.com>
 
         Reviewed by Oliver Hunt.
diff --git a/WebKit/mac/Configurations/FeatureDefines.xcconfig b/WebKit/mac/Configurations/FeatureDefines.xcconfig
index ffc412e218ebc9fc4b323cd6ca5d14c438900bef..ed387aa242c9473240314a8ea48990dc5a2a77a5 100644
--- a/WebKit/mac/Configurations/FeatureDefines.xcconfig
+++ b/WebKit/mac/Configurations/FeatureDefines.xcconfig
@@ -28,7 +28,9 @@
 
 // Set any ENABLE_FEATURE_NAME macro to an empty string to disable that feature.
 
-ENABLE_3D_CANVAS = ENABLE_3D_CANVAS;
+ENABLE_3D_CANVAS = $(ENABLE_3D_CANVAS_$(MAC_OS_X_VERSION_MAJOR));
+ENABLE_3D_CANVAS_1050 = ENABLE_3D_CANVAS;
+ENABLE_3D_CANVAS_1060 = ENABLE_3D_CANVAS;
 
 ENABLE_3D_RENDERING = $(ENABLE_3D_RENDERING_$(MAC_OS_X_VERSION_MAJOR));
 ENABLE_3D_RENDERING_1050 = ENABLE_3D_RENDERING;