diff --git a/contrib/gitian-build.sh b/contrib/gitian-build.sh
index a7d9fe3be..631fba908 100755
--- a/contrib/gitian-build.sh
+++ b/contrib/gitian-build.sh
@@ -188,7 +188,7 @@ then
 fi
 
 # Get signer
-if [[ -n"$1" ]]
+if [[ -n "$1" ]]
 then
     SIGNER=$1
     shift