diff --git a/run-docker.sh b/run-docker.sh
index 186efc322a8f437be0371b5a142a9dd524d1abf3..e07556716db335421f57a390f1e6a17168ac058b 100755
--- a/run-docker.sh
+++ b/run-docker.sh
@@ -96,7 +96,7 @@ gecho "Port-forwarding for Netron $NETRON_PORT:$NETRON_PORT"
 gecho "Vivado IP cache dir is at $VIVADO_IP_CACHE"
 gecho "Using default PYNQ board $PYNQ_BOARD"
 
-DOCKER_INTERACTIVE = ""
+DOCKER_INTERACTIVE=""
 
 if [ "$1" = "test" ]; then
         gecho "Running test suite (all tests)"