diff --git a/workspace/Dockerfile b/workspace/Dockerfile
index 188284e3..3563988a 100644
--- a/workspace/Dockerfile
+++ b/workspace/Dockerfile
@@ -1032,7 +1032,7 @@ RUN if [ ${INSTALL_PRESTISSIMO} = true ]; then \
     if [ $(php -r "echo COMPOSER_VERSION;") = "1" ]; then \
       # Install Prestissimo
       composer global require "hirak/prestissimo" \
-    ;fi
+    ;fi \
 ;fi
 
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