diff --git a/changelog.d/5620.bugfix b/changelog.d/5620.bugfix
new file mode 100644
index 000000000000..17e1f133e847
--- /dev/null
+++ b/changelog.d/5620.bugfix
@@ -0,0 +1 @@
+Add missing space in default logging file format generated by the Docker image
diff --git a/docker/conf/log.config b/docker/conf/log.config
index ea5ccfd68b9d..db35e475a470 100644
--- a/docker/conf/log.config
+++ b/docker/conf/log.config
@@ -2,7 +2,7 @@ version: 1
 
 formatters:
   precise:
-   format: '%(asctime)s - %(name)s - %(lineno)d - %(levelname)s - %(request)s- %(message)s'
+   format: '%(asctime)s - %(name)s - %(lineno)d - %(levelname)s - %(request)s - %(message)s'
 
 filters:
   context: