diff --git a/onyxia-api/entrypoint.sh b/onyxia-api/entrypoint.sh
index 4d0ea470..d64bfb0f 100755
--- a/onyxia-api/entrypoint.sh
+++ b/onyxia-api/entrypoint.sh
@@ -1,11 +1,16 @@
 #!/bin/bash
 
 # Import CA certificates to Java keystore
-for file in $CACERTS_DIR/*
-do
-  echo "Adding $file to keystore"
-  keytool -import -cacerts -trustcacerts -noprompt -storepass changeit -alias $(basename $file) -file $file
-done
+if [[ -n "$CACERTS_DIR" ]]; then
+  for file in $CACERTS_DIR/*
+  do
+    if [ -f "$file" ]
+    then
+      echo "Adding $file to keystore"
+      keytool -import -cacerts -trustcacerts -noprompt -storepass changeit -alias $(basename $file) -file $file
+    fi
+  done
+fi
 
 # Run application
 java -jar /app.jar