diff --git a/radio/src/gvars.cpp b/radio/src/gvars.cpp
index 540a0bd95..0975f617a 100644
--- a/radio/src/gvars.cpp
+++ b/radio/src/gvars.cpp
@@ -48,18 +48,12 @@ int16_t getGVarValue(int8_t gv, int8_t fm)
 
 int32_t getGVarValuePrec1(int8_t gv, int8_t fm)
 {
-  int8_t mul;
-  uint8_t prec = g_model.gvars[abs((int)gv)].prec;    // explicit cast to `int` needed, othervise gv is promoted to double!
-  if (prec == 0)
-    mul = 10;
-  else
-    mul = 1;
-
+  int8_t idx = (gv >= 0 ? gv : -idx - 1);
+  int8_t mul = (g_model.gvars[idx].prec == 0 ? 10 : 1); // explicit cast to `int` needed, othervise gv is promoted to double!
   if (gv < 0) {
-    gv = -1-gv;
     mul = -mul;
   }
-  return GVAR_VALUE(gv, getGVarFlightMode(fm, gv)) * mul;
+  return GVAR_VALUE(idx, getGVarFlightMode(fm, idx)) * mul;
 }
 
 void setGVarValue(uint8_t gv, int16_t value, int8_t fm)