1 files changed, 1 insertions, 1 deletions

diff --git a/src/_props.scss b/src/_props.scss
index 1bdef2a..efc3eea 100644
--- a/src/_props.scss
+++ b/src/_props.scss
@@ -332,7 +332,7 @@ $iro-props-namespace-context-id: 'namespace' !default;
                 $value: null;
             }
         }
-        @if type-of($value) != map {
+        @if type-of($value) != map and $value != () {
             #{$prefix + $key}: #{$value};
         } @else {
             @include iro-props-assign-internal($value, $prefix + $key, $rd);