diff --git a/kpack_c.c b/kpack_c.c
index fddeab9..b603f68 100644
--- a/kpack_c.c
+++ b/kpack_c.c
@@ -60,10 +60,12 @@ unsigned preprocess_calltrick(unsigned char *infile, unsigned insize, unsigned c
     do {
         //printf("infile_ptr = %p, count = %u\n", infile_ptr, count);
         unsigned al = *(infile_ptr++);
-        al -= 0x0E8; // relative call opcode
-        if (al > 1) {
+        al -= 0x0E8;
+        if (al > 1) { // if != E8 and != E9
             continue;
         }
+        // E8 dword: call rel32
+        // E9 dword: jmp rel32
         if (count < 5) {
             break;
         }