diff --git a/scripts/env.sh b/scripts/env.sh
index 61da24dd..be154fa5 100755
--- a/scripts/env.sh
+++ b/scripts/env.sh
@@ -225,7 +225,7 @@ fi
 if [ "${PROJECT_ENABLE_LIBDSM}" == "ON" ]; then
   PROJECT_ENABLE_LIBICONV=ON
   PROJECT_ENABLE_LIBTASN=ON
-  if [ "${PROJECT_IS_MINGW}" ]; then
+  if [ "${PROJECT_IS_MINGW}" == "1" ]; then
     PROJECT_KEEP_OPENSSL=1
   else
     PROJECT_ENABLE_OPENSSL=ON