diff --git a/make/defs-orig.mk b/make/defs-orig.mk
index 951219d2..0c0a72a5 100644
--- a/make/defs-orig.mk
+++ b/make/defs-orig.mk
@@ -86,9 +86,12 @@ TEXTCLEAN   = $(wildcard *~ .*~ .*.swp *.rep)
 INCLUDE     = -I. -I$(TOPDIR)/include -I$(MODDIR)/include $(PROJECT_INCLUDE) $(LOCAL_INCLUDE)
 INSTALL_LIBDIR = $(PREFIX)/lib
 
-LIB_SO      = $(LIBDIR)/lib$(LIBNAME).so
 LIB_A       = $(LIBDIR)/lib$(LIBNAME).a
+ifeq ($(LIBTYPE),shared)
+LIB_SO      = $(LIBDIR)/lib$(LIBNAME).so
 INSTALLED_LIB_SO = $(INSTALL_LIBDIR)/lib$(LIBNAME).so
+else
+endif
 MEMBERS     = $(LIB_A)($(OBJ))
 #PREFIX      = ../# CAUTION: This breaks the installation in the project
 #MEMWATCH    = -DMEMWATCH -DMW_STDIO