diff --git a/src/grovevdiv/grovevdiv.cxx b/src/grovevdiv/grovevdiv.cxx
index 83c8d479..722956ea 100644
--- a/src/grovevdiv/grovevdiv.cxx
+++ b/src/grovevdiv/grovevdiv.cxx
@@ -59,7 +59,7 @@ unsigned int GroveVDiv::value(unsigned int samples)
   return (sum / samples);
 }
 
-float GroveVDiv::computedValue(uint8_t gain, uint16_t val, int vref, int res)
+float GroveVDiv::computedValue(uint8_t gain, unsigned int val, int vref, int res)
 {
   return ((float(gain) * float(val) * float(vref) / float(res)) / 1000.0);
 
diff --git a/src/grovevdiv/grovevdiv.h b/src/grovevdiv/grovevdiv.h
index 5fa3bc34..9e93879d 100644
--- a/src/grovevdiv/grovevdiv.h
+++ b/src/grovevdiv/grovevdiv.h
@@ -89,7 +89,7 @@ namespace upm {
      *
      * @return Measured voltage
      */
-    float computedValue(uint8_t gain, uint16_t val, int vref=GROVEVDIV_VREF,
+    float computedValue(uint8_t gain, unsigned int val, int vref=GROVEVDIV_VREF,
                         int res=GROVEVDIV_ADC_RES);
 
   private: