diff --git a/src/detect/i2cScan.h b/src/detect/i2cScan.h
index 8ea1d7df3..19e405133 100644
--- a/src/detect/i2cScan.h
+++ b/src/detect/i2cScan.h
@@ -224,5 +224,5 @@ void scanI2Cdevice()
         DEBUG_MSG("%i I2C devices found\n",nDevices);
 }
 #else
-void scanI2Cdevice(bool partial) {}
+void scanI2Cdevice() {}
 #endif