diff --git a/shortcuts/shortcuts.sty b/shortcuts/shortcuts.sty
index ffe76be..25abdcf 100644
--- a/shortcuts/shortcuts.sty
+++ b/shortcuts/shortcuts.sty
@@ -65,13 +65,13 @@
 %% positive skip.
 %%
 \NewDocumentCommand \pskip { G{.2} } {%
-    \vspace{+#1cm}
+    \vspace*{+#1cm}
 }
 
 %% negative skip.
 %%
 \NewDocumentCommand \nskip { G{.8} } {%
-    \vspace{-#1cm}
+    \vspace*{-#1cm}
 }
 
 %% another shortcut to whiting text.