diff --git a/src/server/simpleslave.c b/src/server/simpleslave.c
--- a/src/server/simpleslave.c
+++ b/src/server/simpleslave.c
@@ -130,13 +130,19 @@ int main(int argc, char *argv[])
 
   int benchmarkTime = 0;
   int renderPower = 0;
-  if(slaveBenchmark(datadir, &benchmarkTime, &renderPower)){
-    fprintf(stderr,"Benchmark failed! Exiting.\n");
-    return 1;
-  }
-  else{
-    fprintf(stderr,"Benchmark successful, time taken was %d seconds, giving you a render power of %d.\n", benchmarkTime, renderPower);
-    _web_setrenderpower(slavekey, password, renderPower);
+
+  char option[1] = "";
+  fprintf(stderr,"Do you want to recalculate render power? (y/n): ");
+  scanf("%s", option);
+  if(!strcmp(option, "y")){
+    if(slaveBenchmark(datadir, &benchmarkTime, &renderPower)){
+      fprintf(stderr,"Benchmark failed! Exiting.\n");
+      return 1;
+    }
+    else{
+      fprintf(stderr,"Benchmark successful, time taken was %d seconds, giving you a render power of %d.\n", benchmarkTime, renderPower);
+      _web_setrenderpower(slavekey, password, renderPower);
+    }
   }
 
   // Main loop