diff --git a/src/app-layer-dnp3.c b/src/app-layer-dnp3.c
index d0c3f4f336..be682bb019 100644
--- a/src/app-layer-dnp3.c
+++ b/src/app-layer-dnp3.c
@@ -175,6 +175,9 @@ static uint16_t DNP3ComputeCRC(const uint8_t *buf, uint32_t len)
  */
 static int DNP3CheckCRC(const uint8_t *block, uint32_t len)
 {
+#ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION
+    return 1;
+#endif
     uint32_t crc_offset;
     uint16_t crc;