diff --git a/core/org.eclipse.cdt.core.tests/resources/rewrite/ASTWriterDeclarationTestSource.awts b/core/org.eclipse.cdt.core.tests/resources/rewrite/ASTWriterDeclarationTestSource.awts
index cc6ec95b5a8..7d03a6e3e35 100644
--- a/core/org.eclipse.cdt.core.tests/resources/rewrite/ASTWriterDeclarationTestSource.awts
+++ b/core/org.eclipse.cdt.core.tests/resources/rewrite/ASTWriterDeclarationTestSource.awts
@@ -4,7 +4,7 @@ asm("movl %1, %%eax;");
 
 //!GNUExtendedASMDeclarationTest
 //%CPP GNU
-asm("bswap %0" : "+r" (_data));
+asm("bswap %0" : "+r" ( _data ));
 
 //!FunctionDefinitionTest
 //%CPP