diff --git a/build/org.eclipse.cdt.managedbuilder.core.tests/tests/org/eclipse/cdt/managedbuilder/language/settings/providers/tests/GCCBuiltinSpecsDetectorTest.java b/build/org.eclipse.cdt.managedbuilder.core.tests/tests/org/eclipse/cdt/managedbuilder/language/settings/providers/tests/GCCBuiltinSpecsDetectorTest.java
index b9dfedc77d3..870cc21e0c0 100644
--- a/build/org.eclipse.cdt.managedbuilder.core.tests/tests/org/eclipse/cdt/managedbuilder/language/settings/providers/tests/GCCBuiltinSpecsDetectorTest.java
+++ b/build/org.eclipse.cdt.managedbuilder.core.tests/tests/org/eclipse/cdt/managedbuilder/language/settings/providers/tests/GCCBuiltinSpecsDetectorTest.java
@@ -147,6 +147,7 @@ public class GCCBuiltinSpecsDetectorTest extends BaseTestCase {
 		detector.processLine("#define \t MACRO_1 VALUE");
 		detector.processLine("#define MACRO_2 \t VALUE");
 		detector.processLine("#define MACRO_3 VALUE \t");
+		detector.processLine("#define MACRO_4 VALUE + 1");
 		detector.shutdownForLanguage();
 		detector.shutdown();
 
@@ -155,6 +156,7 @@ public class GCCBuiltinSpecsDetectorTest extends BaseTestCase {
 		assertEquals(new CMacroEntry("MACRO_1", "VALUE", ICSettingEntry.BUILTIN | ICSettingEntry.READONLY), entries.get(index++));
 		assertEquals(new CMacroEntry("MACRO_2", "VALUE", ICSettingEntry.BUILTIN | ICSettingEntry.READONLY), entries.get(index++));
 		assertEquals(new CMacroEntry("MACRO_3", "VALUE", ICSettingEntry.BUILTIN | ICSettingEntry.READONLY), entries.get(index++));
+		assertEquals(new CMacroEntry("MACRO_4", "VALUE + 1", ICSettingEntry.BUILTIN | ICSettingEntry.READONLY), entries.get(index++));
 		assertEquals(index, entries.size());
 	}
 
diff --git a/build/org.eclipse.cdt.managedbuilder.core/src/org/eclipse/cdt/managedbuilder/language/settings/providers/GCCBuiltinSpecsDetector.java b/build/org.eclipse.cdt.managedbuilder.core/src/org/eclipse/cdt/managedbuilder/language/settings/providers/GCCBuiltinSpecsDetector.java
index e821b0d72a2..5b8ded66a44 100644
--- a/build/org.eclipse.cdt.managedbuilder.core/src/org/eclipse/cdt/managedbuilder/language/settings/providers/GCCBuiltinSpecsDetector.java
+++ b/build/org.eclipse.cdt.managedbuilder.core/src/org/eclipse/cdt/managedbuilder/language/settings/providers/GCCBuiltinSpecsDetector.java
@@ -45,7 +45,7 @@ public class GCCBuiltinSpecsDetector extends ToolchainBuiltinSpecsDetector imple
 			new IncludePathOptionParser("#include <(\\S.*)>", "$1", ICSettingEntry.BUILTIN | ICSettingEntry.READONLY),
 			new IncludePathOptionParser("#framework <(\\S.*)>", "$1", ICSettingEntry.BUILTIN | ICSettingEntry.READONLY | ICSettingEntry.FRAMEWORKS_MAC),
 			new MacroOptionParser("#define\\s+(\\S*\\(.*?\\))\\s*(.*)", "$1", "$2", ICSettingEntry.BUILTIN | ICSettingEntry.READONLY),
-			new MacroOptionParser("#define\\s+(\\S*)\\s*(\\S*)", "$1", "$2", ICSettingEntry.BUILTIN | ICSettingEntry.READONLY),
+			new MacroOptionParser("#define\\s+(\\S*)\\s*(.*)", "$1", "$2", ICSettingEntry.BUILTIN | ICSettingEntry.READONLY),
 	};
 
 	/**