diff --git a/1.0/adaptation/config.cpp b/1.0/adaptation/config.cpp
index c75d013..96c452d 100644
--- a/1.0/adaptation/config.cpp
+++ b/1.0/adaptation/config.cpp
@@ -265,7 +265,7 @@
           state = END_LINE;
           break;
         }
-      // fal through to numValue to handle numValue
+        [[fallthrough]]; // fall through to numValue to handle numValue
 
       case NUM_VALUE:
         if (isDigit(c, base)) {
diff --git a/st21nfc/adaptation/config.cpp b/st21nfc/adaptation/config.cpp
index d985206..224b9a9 100644
--- a/st21nfc/adaptation/config.cpp
+++ b/st21nfc/adaptation/config.cpp
@@ -266,7 +266,7 @@
           state = END_LINE;
           break;
         }
-        // fal through to numValue to handle numValue
+        [[fallthrough]]; // fall through to numValue to handle numValue
 
       case NUM_VALUE:
         if (isDigit(c, base)) {