diff --git a/src/utility/GAP.cpp b/src/utility/GAP.cpp
index ae2e90cd..8aa4a3a0 100644
--- a/src/utility/GAP.cpp
+++ b/src/utility/GAP.cpp
@@ -54,7 +54,7 @@ void GAPClass::setManufacturerData(const uint8_t manufacturerData[], int manufac
   _manufacturerDataLength = manufacturerDataLength;
 }
 
-void GAPClass::setManufacturerData(const uint16_t companyId, const uint8_t manufacturerData[], int manufacturerDataLength)
+void GAPClass::setManufacturerData(const uint16_t companyId, const uint8_t &manufacturerData[], int manufacturerDataLength)
 {
   uint8_t tmpManufacturerData[manufacturerDataLength + 2];
   tmpManufacturerData[0] = companyId & 0xff;