diff --git a/Python/pyhash.c b/Python/pyhash.c
index 57a2da7..a2ec230 100644
--- a/Python/pyhash.c
+++ b/Python/pyhash.c
@@ -393,13 +393,13 @@
     pt = (uint8_t *)&t;
     m = (uint8_t *)in;
     switch (src_sz) {
-        case 7: pt[6] = m[6];
-        case 6: pt[5] = m[5];
-        case 5: pt[4] = m[4];
+        case 7: pt[6] = m[6]; /* fall through */
+        case 6: pt[5] = m[5]; /* fall through */
+        case 5: pt[4] = m[4]; /* fall through */
         case 4: memcpy(pt, m, sizeof(uint32_t)); break;
-        case 3: pt[2] = m[2];
-        case 2: pt[1] = m[1];
-        case 1: pt[0] = m[0];
+        case 3: pt[2] = m[2]; /* fall through */
+        case 2: pt[1] = m[1]; /* fall through */
+        case 1: pt[0] = m[0]; /* fall through */
     }
     b |= _le64toh(t);