diff --git a/sofort/ccenv/ccenv.in b/sofort/ccenv/ccenv.in
index 0daff84..8e5f0e0 100644
--- a/sofort/ccenv/ccenv.in
+++ b/sofort/ccenv/ccenv.in
@@ -91,6 +91,6 @@ CFLAGS_ATTR_VISIBILITY_INTERNAL         = -D_ATTR_VISIBILITY_INTERNAL=@ccenv_att
 CFLAGS_ATTR_VISIBILITY_PROTECTED        = -D_ATTR_VISIBILITY_PROTECTED=@ccenv_attr_visibility_protected@
 
 # @ccenv_cfgtype@ cflags
-CFLAGS_OS                              += -DOS_LIB_SUFFIX=\"@ccenv_os_lib_suffix@\"
+CFLAGS_OS                              += -DSO_LIB_SUFFIX=\"@ccenv_os_lib_suffix@\"
 CFLAGS_OS                              += @ccenv_cflags_os@
 CFLAGS_PIC                             += @ccenv_cflags_pic@