diff --git a/src/_webp.c b/src/_webp.c
index 9231150aa55..c2532a49687 100644
--- a/src/_webp.c
+++ b/src/_webp.c
@@ -636,7 +636,7 @@ WebPEncode_wrapper(PyObject *self, PyObject *args) {
     config.quality = quality_factor;
     config.method = method;
 #if WEBP_ENCODER_ABI_VERSION >= 0x0209
-    // the exact flag is only available in libwebp 0.5.0 and later
+    // the "exact" flag is only available in libwebp 0.5.0 and later
     config.exact = exact;
 #endif