diff --git a/nordicsemi/dfu/signing.py b/nordicsemi/dfu/signing.py
index 9d1a2e9..4b88639 100644
--- a/nordicsemi/dfu/signing.py
+++ b/nordicsemi/dfu/signing.py
@@ -233,7 +233,7 @@ def get_vk_code(self, dbg):
 /** @brief Public key used to verify DFU images */
 __ALIGN(4) const uint8_t pk[64] =
 {{
-    {0}
+    {0},
     {1}
 }};
 """