diff --git a/make-linux b/make-linux
index c86bb2d..4ff0af4 100755
--- a/make-linux
+++ b/make-linux
@@ -53,7 +53,7 @@ set_icu_version() {
     exit 1
   esac
 
-  export ICU_VERSION_U=${ICU_VERSION//./_}
+  export ICU_VERSION_U=${ICU_VERSION//-/_}
 }
 
 add_prebuilt_lib() {