diff --git a/icu4c/source/test/cintltst/nccbtst.h b/icu4c/source/test/cintltst/nccbtst.h
index 13df1f4c069..0cae9e7cf18 100644
--- a/icu4c/source/test/cintltst/nccbtst.h
+++ b/icu4c/source/test/cintltst/nccbtst.h
@@ -12,8 +12,8 @@
 *     Madhu Katragadda           creation
 *********************************************************************************
 */
-#ifndef _NUCNVTST
-#define _NUCNVTST
+#ifndef _NCCBTST
+#define _NCCBTST
 /* C API TEST FOR CALL BACK ROUTINES OF CODESET CONVERSION COMPONENT */
 #include "cintltst.h"
 #include "unicode/utypes.h"