diff --git a/library/gcm.c b/library/gcm.c
index 894c5d3..8950360 100644
--- a/library/gcm.c
+++ b/library/gcm.c
@@ -198,7 +198,7 @@
         PUT_UINT32_BE( ctx->HL[8] >> 32, h,  8 );
         PUT_UINT32_BE( ctx->HL[8],       h, 12 );
 
-        (void) aesni_gcm_mult( output, x, h );
+        aesni_gcm_mult( output, x, h );
         return;
     }
 #endif