diff --git a/mongoose.c b/mongoose.c
index bd1292ac..ef676523 100644
--- a/mongoose.c
+++ b/mongoose.c
@@ -15,7 +15,7 @@
 // Alternatively, you can license this software under a commercial
 // license, as set out in https://www.mongoose.ws/licensing/
 //
-// SPDX-License-Identifier: GPL-2.0 or commercial
+// SPDX-License-Identifier: GPL-2.0-only or commercial
 
 #include "mongoose.h"
 
diff --git a/mongoose.h b/mongoose.h
index 59c2c733..6c5b66af 100644
--- a/mongoose.h
+++ b/mongoose.h
@@ -15,7 +15,7 @@
 // Alternatively, you can license this software under a commercial
 // license, as set out in https://www.mongoose.ws/licensing/
 //
-// SPDX-License-Identifier: GPL-2.0 or commercial
+// SPDX-License-Identifier: GPL-2.0-only or commercial
 
 #ifndef MONGOOSE_H
 #define MONGOOSE_H
diff --git a/src/license.h b/src/license.h
index 7de3e224..148c91f8 100644
--- a/src/license.h
+++ b/src/license.h
@@ -15,4 +15,4 @@
 // Alternatively, you can license this software under a commercial
 // license, as set out in https://www.mongoose.ws/licensing/
 //
-// SPDX-License-Identifier: GPL-2.0 or commercial
+// SPDX-License-Identifier: GPL-2.0-only or commercial