diff --git a/Makefile b/Makefile
index 5a4e50b..a4c5537 100644
--- a/Makefile
+++ b/Makefile
@@ -670,8 +670,10 @@ ifeq ($(PLATFORM),openbsd)
     USE_CURL_DLOPEN=0
   endif
 
+  # no shm_open on OpenBSD
+  USE_MUMBLE=0
+
   SHLIBEXT=so
-  SHLIBNAME=.$(SHLIBEXT)
   SHLIBCFLAGS=-fPIC
   SHLIBLDFLAGS=-shared $(LDFLAGS)