diff --git a/build/org.eclipse.cdt.build.gcc.core/src/org/eclipse/cdt/build/gcc/core/internal/GCCPathToolChainProvider.java b/build/org.eclipse.cdt.build.gcc.core/src/org/eclipse/cdt/build/gcc/core/internal/GCCPathToolChainProvider.java
index 7debdd90391..7c5e7b3c261 100644
--- a/build/org.eclipse.cdt.build.gcc.core/src/org/eclipse/cdt/build/gcc/core/internal/GCCPathToolChainProvider.java
+++ b/build/org.eclipse.cdt.build.gcc.core/src/org/eclipse/cdt/build/gcc/core/internal/GCCPathToolChainProvider.java
@@ -72,6 +72,8 @@ public class GCCPathToolChainProvider implements IToolChainProvider {
 									case "apple": //$NON-NLS-1$
 										gcc.setProperty(IToolChain.ATTR_OS, Platform.OS_MACOSX);
 										break;
+									default:
+										gcc.setProperty(IToolChain.ATTR_OS, tuple[1]);
 									}
 									try {
 										if (manager.getToolChain(gcc.getTypeId(), gcc.getId()) == null) {