diff --git a/linux/GPUMeter.c b/linux/GPUMeter.c
index 04b522a58..baaa43f0e 100644
--- a/linux/GPUMeter.c
+++ b/linux/GPUMeter.c
@@ -40,7 +40,7 @@ static const int GPUMeter_attributes[] = {
 
 static int humanTimeUnit(char* buffer, size_t size, unsigned long long int value) {
    if (value < 10000)
-      return xSnprintf(buffer, size, "%4lluns", value);
+      return xSnprintf(buffer, size, "%4uns", (unsigned int)value);
 
    value /= 100;