diff --git a/bundles/org.eclipse.core.filesystem.macosx/META-INF/MANIFEST.MF b/bundles/org.eclipse.core.filesystem.macosx/META-INF/MANIFEST.MF
index 2be6c2d..a40f9a9 100644
--- a/bundles/org.eclipse.core.filesystem.macosx/META-INF/MANIFEST.MF
+++ b/bundles/org.eclipse.core.filesystem.macosx/META-INF/MANIFEST.MF
@@ -6,4 +6,4 @@
 Bundle-Vendor: %providerName
 Fragment-Host: org.eclipse.core.filesystem;bundle-version="[1.3.0,2.0.0)"
 Bundle-Localization: fragment
-Eclipse-PlatformFilter: (& (osgi.os=macosx) (|(osgi.arch=x86) (osgi.arch=ppc) (osgi.arch=x86_64)))
+Eclipse-PlatformFilter: (& (osgi.os=macosx) (osgi.arch=x86_64))
diff --git a/bundles/org.eclipse.core.filesystem/natives/unix/macosx/Makefile b/bundles/org.eclipse.core.filesystem/natives/unix/macosx/Makefile
index d8e004e..cff6f86 100644
--- a/bundles/org.eclipse.core.filesystem/natives/unix/macosx/Makefile
+++ b/bundles/org.eclipse.core.filesystem/natives/unix/macosx/Makefile
@@ -17,7 +17,7 @@
 JDK_INCLUDE=-I /System/Library/Frameworks/JavaVM.framework/Headers
 FRAMEWORKS=-framework JavaVM -framework CoreServices
 # define MACOSX to include Mac OS X specific code
-CC_FLAGS=-arch i386 -arch ppc -arch x86_64 -mmacosx-version-min=10.4 -DMACOSX
+CC_FLAGS=-arch x86_64 -mmacosx-version-min=10.4 -DMACOSX
 
 core:
 	cc $(JDK_INCLUDE) $(CORE.C) -o $(LIB_NAME_FULL) -bundle $(FRAMEWORKS) $(CC_FLAGS)