diff --git a/download-dependencies b/download-dependencies
index 6473348..ed96450 100755
--- a/download-dependencies
+++ b/download-dependencies
@@ -153,7 +153,7 @@ EOF
     export DEBIAN_FRONTEND=noninteractive
     mysudo=
     # https://askubuntu.com/questions/496549/error-you-must-put-some-source-uris-in-your-sources-list
-    sed -Ei 's/^# deb-src/deb-src/' /etc/apt/sources.list
+    sed -Ei 's/^# deb-src /deb-src /' /etc/apt/sources.list
     y=-y
   else
     mysudo=sudo