diff --git a/arch/risc-v/src/esp32c3/esp32c3_bignum.c b/arch/risc-v/src/esp32c3/esp32c3_bignum.c
index a36a8a3394..6728ec4ffd 100644
--- a/arch/risc-v/src/esp32c3/esp32c3_bignum.c
+++ b/arch/risc-v/src/esp32c3/esp32c3_bignum.c
@@ -1431,7 +1431,7 @@ int esp32c3_mpi_copy(struct esp32c3_mpi_s *X,
         }
     }
 
-  i ++;
+  i++;
 
   X->s = Y->s;
 
diff --git a/arch/risc-v/src/esp32c3/esp32c3_sha.c b/arch/risc-v/src/esp32c3/esp32c3_sha.c
index dd71d60696..6e800df320 100644
--- a/arch/risc-v/src/esp32c3/esp32c3_sha.c
+++ b/arch/risc-v/src/esp32c3/esp32c3_sha.c
@@ -251,7 +251,7 @@ static int esp32c3_sha1_block(struct esp32c3_sha1_context_s *ctx,
     {
     }
 
-  for (i = 0; i < 5; i ++)
+  for (i = 0; i < 5; i++)
     {
       ctx->state[i] = getreg32(SHA_H_0_REG + i * 4);
     }
@@ -357,7 +357,7 @@ static int esp32c3_sha256_block(struct esp32c3_sha256_context_s *ctx,
       num_block = 7;
     }
 
-  for (i = 0; i < num_block; i ++)
+  for (i = 0; i < num_block; i++)
     {
       ctx->state[i] = getreg32(SHA_H_0_REG + i * 4);
     }