diff --git a/core/org.eclipse.cdt.core/src/org/eclipse/cdt/internal/formatter/Scribe.java b/core/org.eclipse.cdt.core/src/org/eclipse/cdt/internal/formatter/Scribe.java
index ca00e95944d..5a65a84c332 100644
--- a/core/org.eclipse.cdt.core/src/org/eclipse/cdt/internal/formatter/Scribe.java
+++ b/core/org.eclipse.cdt.core/src/org/eclipse/cdt/internal/formatter/Scribe.java
@@ -1708,6 +1708,7 @@ public class Scribe {
 				fSkippedIndentations++;
 			}
 			if (offset > currentPosition) {
+				space();
 				printRaw(currentPosition, offset - currentPosition);
 				scanner.resetTo(offset, scannerEndPosition - 1);
 			}
diff --git a/core/org.eclipse.cdt.ui.tests/ui/org/eclipse/cdt/ui/tests/text/CodeFormatterTest.java b/core/org.eclipse.cdt.ui.tests/ui/org/eclipse/cdt/ui/tests/text/CodeFormatterTest.java
index 857a635d6bb..8f25dcf3867 100644
--- a/core/org.eclipse.cdt.ui.tests/ui/org/eclipse/cdt/ui/tests/text/CodeFormatterTest.java
+++ b/core/org.eclipse.cdt.ui.tests/ui/org/eclipse/cdt/ui/tests/text/CodeFormatterTest.java
@@ -852,5 +852,24 @@ public class CodeFormatterTest extends BaseUITestCase {
 	public void testPreserveSpaceBetweenPointerModifierAndIdentifier_Bug243056() throws Exception {
 		assertFormatterResult();
 	}
-	
+
+	//#define FUNCTION_NAME myFunc
+	//#define VARIABLE_NAME myVar
+	//
+	//void FUNCTION_NAME( void );
+	//void FUNCTION_NAME( void )
+	//{
+	//int VARIABLE_NAME;
+	//}
+
+	//#define FUNCTION_NAME myFunc
+	//#define VARIABLE_NAME myVar
+	//
+	//void FUNCTION_NAME(void);
+	//void FUNCTION_NAME(void) {
+	//	int VARIABLE_NAME;
+	//}
+	public void testPreserveNecessarySpace_Bug250969() throws Exception {
+		assertFormatterResult();
+	}
 }