diff --git a/icu4c/source/tools/gentz/gentz.cpp b/icu4c/source/tools/gentz/gentz.cpp
index b75ff71999b..4fcc471e593 100644
--- a/icu4c/source/tools/gentz/gentz.cpp
+++ b/icu4c/source/tools/gentz/gentz.cpp
@@ -37,7 +37,7 @@
 #define OUTPUT_FILE "tz.dat"
 
 /* UDataInfo cf. udata.h */
-static const UDataInfo dataInfo = {
+static UDataInfo dataInfo = {
     sizeof(UDataInfo),
     0,