diff --git a/icu4c/source/test/cintltst/uenumtst.c b/icu4c/source/test/cintltst/uenumtst.c
index 23b404e271f..935f0a3887d 100644
--- a/icu4c/source/test/cintltst/uenumtst.c
+++ b/icu4c/source/test/cintltst/uenumtst.c
@@ -50,6 +50,7 @@ static void U_CALLCONV
 chArrayClose(UEnumeration *en) {
     if(cont->currUChar != NULL) {
         free(cont->currUChar);
+        cont->currUChar = NULL;
     }
     free(en);
 }