diff --git a/Makefile.conf b/Makefile.conf
index 47aeb97..319a87e 100644
--- a/Makefile.conf
+++ b/Makefile.conf
@@ -10,7 +10,7 @@ BUILD_ON:=$(shell uname)
 SOVERSION=2.1.22
 
 ifeq ($(BUILD_ON),OS/390)
-TARGETS=libpEpAdapter.a libpEpAdapter.so
+TARGETS=libpEpAdapter.a
 SO_CFLAGS = -W "l,xplink,dll" -W "c,float(ieee),xplink,dll,exportall"
 CPPFLAGS += -W "l,xplink,dll" -W "c,float(ieee),xplink,dll,exportall"
 else ifeq ($(BUILD_ON),Linux)