diff --git a/bn_mp_div.c b/bn_mp_div.c
index 336a57b..f50a8d7 100644
--- a/bn_mp_div.c
+++ b/bn_mp_div.c
@@ -196,8 +196,9 @@ int mp_div (mp_int * a, mp_int * b, mp_int * c, mp_int * d)
       tmp = ((mp_word) x.dp[i]) << ((mp_word) DIGIT_BIT);
       tmp |= ((mp_word) x.dp[i - 1]);
       tmp /= ((mp_word) y.dp[t]);
-      if (tmp > (mp_word) MP_MASK)
+      if (tmp > (mp_word) MP_MASK) {
         tmp = MP_MASK;
+      }
       q.dp[i - t - 1] = (mp_digit) (tmp & (mp_word) (MP_MASK));
     }
 
diff --git a/bn_mp_mul.c b/bn_mp_mul.c
index 74b5135..d7f0074 100644
--- a/bn_mp_mul.c
+++ b/bn_mp_mul.c
@@ -49,12 +49,13 @@ int mp_mul (mp_int * a, mp_int * b, mp_int * c)
       res = fast_s_mp_mul_digs (a, b, c, digs);
     } else 
 #endif
+    {
 #ifdef BN_S_MP_MUL_DIGS_C
       res = s_mp_mul (a, b, c); /* uses s_mp_mul_digs */
 #else
       res = MP_VAL;
 #endif
-
+    }
   }
   c->sign = (c->used > 0) ? neg : MP_ZPOS;
   return res;
diff --git a/bn_mp_shrink.c b/bn_mp_shrink.c
index 0eaa09e..bbc1208 100644
--- a/bn_mp_shrink.c
+++ b/bn_mp_shrink.c
@@ -21,8 +21,9 @@ int mp_shrink (mp_int * a)
   mp_digit *tmp;
   int used = 1;
   
-  if(a->used > 0)
+  if(a->used > 0) {
     used = a->used;
+  }
   
   if (a->alloc != used) {
     if ((tmp = OPT_CAST(mp_digit) XREALLOC (a->dp, sizeof (mp_digit) * used)) == NULL) {
diff --git a/bn_mp_sqr.c b/bn_mp_sqr.c
index fa5a8a6..5167ce0 100644
--- a/bn_mp_sqr.c
+++ b/bn_mp_sqr.c
@@ -42,11 +42,13 @@ mp_sqr (mp_int * a, mp_int * b)
       res = fast_s_mp_sqr (a, b);
     } else
 #endif
+    {
 #ifdef BN_S_MP_SQR_C
       res = s_mp_sqr (a, b);
 #else
       res = MP_VAL;
 #endif
+    }
   }
   b->sign = MP_ZPOS;
   return res;