diff --git a/sofort/ccenv/ccenv.in b/sofort/ccenv/ccenv.in
index 531a7dd..f12c78e 100644
--- a/sofort/ccenv/ccenv.in
+++ b/sofort/ccenv/ccenv.in
@@ -80,6 +80,7 @@ AS                              = @ccenv_as@
 LD                              = @ccenv_ld@
 
 # @ccenv_cfgtype@ cflags
+CFLAGS_OS                      += -DOS_LIB_SUFFIX=\"@ccenv_os_lib_suffix@\"
 CFLAGS_OS                      += @ccenv_cflags_os@
 CFLAGS_PIC                     += @ccenv_cflags_pic@