diff --git a/src/sdf/sdf_meth.c b/src/sdf/sdf_meth.c
index 44b87e68..e4b77a38 100755
--- a/src/sdf/sdf_meth.c
+++ b/src/sdf/sdf_meth.c
@@ -97,7 +97,7 @@ end:
 
 void SDF_METHOD_free(SDF_METHOD *meth)
 {
-	if (meth) free(meth->dso);
+	if (meth) dylib_close_library(meth->dso);
 	free(meth);
 }