diff --git a/icu4c/source/config/mh-os390 b/icu4c/source/config/mh-os390
index 730c86553ed..13fbec65c97 100644
--- a/icu4c/source/config/mh-os390
+++ b/icu4c/source/config/mh-os390
@@ -99,9 +99,9 @@ FINAL_SO_TARGET=  $(basename $(SO_TARGET))$(SO_TARGET_VERSION).$(SO)
 MIDDLE_SO_TARGET= $(basename $(SO_TARGET))$(SO_TARGET_VERSION_MAJOR).$(SO)
 
 ## Versioned import library names.
-IMPORT_LIB = $(basename $(SO_TARGET))$(IMPORT_LIB_EXT)
-MIDDLE_IMPORT_LIB = $(basename $(MIDDLE_SO_TARGET))$(IMPORT_LIB_EXT)
-FINAL_IMPORT_LIB = $(basename $(FINAL_SO_TARGET))$(IMPORT_LIB_EXT)
+IMPORT_LIB = $(basename $(notdir $(SO_TARGET)))$(IMPORT_LIB_EXT)
+MIDDLE_IMPORT_LIB = $(basename $(notdir $(MIDDLE_SO_TARGET)))$(IMPORT_LIB_EXT)
+FINAL_IMPORT_LIB = $(basename $(notdir $(FINAL_SO_TARGET)))$(IMPORT_LIB_EXT)
 
 ## Shared object suffix (switch to dll for shared library build)
 SO = dll