diff --git a/icu4c/source/i18n/olsontz.h b/icu4c/source/i18n/olsontz.h
index 3d6eba84331..d997e2665e9 100644
--- a/icu4c/source/i18n/olsontz.h
+++ b/icu4c/source/i18n/olsontz.h
@@ -150,7 +150,7 @@ class U_I18N_API OlsonTimeZone: public BasicTimeZone {
     /**
      * TimeZone API.
      */
-    U_I18N_API static UClassID U_EXPORT2 getStaticClassID();
+    static UClassID U_EXPORT2 getStaticClassID();
 
     /**
      * TimeZone API.