diff --git a/src/include/binary_hist.h b/src/include/binary_hist.h
index 0c10e85f1..0b6fcfcf1 100644
--- a/src/include/binary_hist.h
+++ b/src/include/binary_hist.h
@@ -43,7 +43,7 @@ static inline int
 binary_hist_size(const struct binary_hist *bh)
 {
     if (!bh)
-	return -EINVAL;
+        return -EINVAL;
 
     return bh->bh_num_buckets;
 }
diff --git a/src/include/raft_net.h b/src/include/raft_net.h
index 35295d115..c0dfed733 100644
--- a/src/include/raft_net.h
+++ b/src/include/raft_net.h
@@ -761,7 +761,7 @@ raft_net_client_user_id_to_string(const struct raft_net_client_user_id *rncui,
                       RAFT_NET_CLIENT_USER_ID_FMT_ARGS(rncui, uuid_str, 0));
 
     if (rc < 0)
-	return rc;
+        return rc;
 
     return ((size_t)rc > (out_string_len - 1)) ? -ENOSPC : 0;
 }
diff --git a/test/raft-reference-client.c b/test/raft-reference-client.c
index 9fc9a8142..be912bfac 100644
--- a/test/raft-reference-client.c
+++ b/test/raft-reference-client.c
@@ -1106,11 +1106,11 @@ raft_client_test_instance_hist_lreg_multi_facet_handler(
     struct lreg_value *lv)
 {
     if (!lv || !rihs)
-	return -EINVAL;
+        return -EINVAL;
 
     int hsz = binary_hist_size(&rihs->rihs_bh);
     if (hsz < 0)
-	return hsz;
+        return hsz;
 
     if (lv->lrv_value_idx_in >= (uint32_t)hsz)
         return -EINVAL;