diff --git a/contrib/guix/guix-build b/contrib/guix/guix-build
index 74b24b9612..5488b07a12 100755
--- a/contrib/guix/guix-build
+++ b/contrib/guix/guix-build
@@ -127,7 +127,7 @@ fi
 for host in $HOSTS; do
     case "$host" in
         *darwin*)
-            OSX_SDK="$(make -C "${PWD}/depends" --no-print-directory HOST="$host" print-OSX_SDK | sed 's@^[^=]\+=@@g')"
+            OSX_SDK="$(make -C "${PWD}/depends" --no-print-directory HOST="$host" print-OSX_SDK | sed 's@^[^=]\+= @@g')"
             if [ -e "$OSX_SDK" ]; then
                 echo "Found macOS SDK at '${OSX_SDK}', using..."
                 break