diff --git a/src/lj_strfmt_num.c b/src/lj_strfmt_num.c
index 04769258..7b33f930 100644
--- a/src/lj_strfmt_num.c
+++ b/src/lj_strfmt_num.c
@@ -138,7 +138,7 @@ static uint32_t nd_mul2k(uint32_t* nd, uint32_t ndhi, uint32_t k,
     }
     if (carry_in) {
       nd[++ndhi] = carry_in; carry_in = 0;
-      if(start++ == ndlo) ++ndlo;
+      if (start++ == ndlo) ++ndlo;
     }
     k -= ND_MUL2K_MAX_SHIFT;
   }