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-rw-r--r--src/afl-fuzz-one.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/afl-fuzz-one.c b/src/afl-fuzz-one.c
index 19f41ebe..ef80524f 100644
--- a/src/afl-fuzz-one.c
+++ b/src/afl-fuzz-one.c
@@ -2585,7 +2585,7 @@ havoc_stage:
           snprintf(afl->m_tmp, sizeof(afl->m_tmp), " SUBBYTE_");
           strcat(afl->mutation, afl->m_tmp);
 #endif
-          out_buf[rand_below(afl, temp_len)]++;
+          out_buf[rand_below(afl, temp_len)]--;
           break;
 
         }