diff --git a/icu4c/source/i18n/regeximp.h b/icu4c/source/i18n/regeximp.h
index cc3ebf85b69..d527f2f6772 100644
--- a/icu4c/source/i18n/regeximp.h
+++ b/icu4c/source/i18n/regeximp.h
@@ -21,8 +21,8 @@ U_NAMESPACE_BEGIN
 //
 #ifdef _DEBUG
 //#define REGEX_SCAN_DEBUG
-#define REGEX_DUMP_DEBUG
-#define REGEX_RUN_DEBUG
+//#define REGEX_DUMP_DEBUG
+//#define REGEX_RUN_DEBUG
 #endif
 //  End of #defines inteded to be directly set.