diff --git a/include/haproxy/protobuf.h b/include/haproxy/protobuf.h
index 009bd13d7..512288b5e 100644
--- a/include/haproxy/protobuf.h
+++ b/include/haproxy/protobuf.h
@@ -365,13 +365,13 @@ int protobuf_smp_store_64bit(struct sample *smp, int type,
 	case PBUF_T_64BIT_FIXED64:
 	case PBUF_T_64BIT_SFIXED64:
 		smp->data.type = SMP_T_SINT;
-		smp->data.u.sint = pbuf_le64toh(*(uint64_t *)pos);
+		smp->data.u.sint = pbuf_le64toh(read_u64(pos));
 		smp->flags = SMP_F_VOL_TEST;
 		break;
 
 	case PBUF_T_64BIT_DOUBLE:
 		smp->data.type = SMP_T_SINT;
-		smp->data.u.sint = pbuf_le64toh(*(double *)pos);
+		smp->data.u.sint = pbuf_le64toh(read_dbl(pos));
 		smp->flags = SMP_F_VOL_TEST;
 		break;
 
@@ -455,19 +455,19 @@ int protobuf_smp_store_32bit(struct sample *smp, int type,
 
 	case PBUF_T_32BIT_FIXED32:
 		smp->data.type = SMP_T_SINT;
-		smp->data.u.sint = pbuf_le32toh(*(uint32_t *)pos);
+		smp->data.u.sint = pbuf_le32toh(read_u32(pos));
 		smp->flags = SMP_F_VOL_TEST;
 		break;
 
 	case PBUF_T_32BIT_SFIXED32:
 		smp->data.type = SMP_T_SINT;
-		smp->data.u.sint = (int32_t)pbuf_le32toh(*(uint32_t *)pos);
+		smp->data.u.sint = (int32_t)pbuf_le32toh(read_u32(pos));
 		smp->flags = SMP_F_VOL_TEST;
 		break;
 
 	case PBUF_T_32BIT_FLOAT:
 		smp->data.type = SMP_T_SINT;
-		smp->data.u.sint = pbuf_le32toh(*(float *)pos);
+		smp->data.u.sint = pbuf_le32toh(read_flt(pos));
 		smp->flags = SMP_F_VOL_TEST;
 		break;
 
diff --git a/src/sample.c b/src/sample.c
index 8f46d31b9..334782c17 100644
--- a/src/sample.c
+++ b/src/sample.c
@@ -3818,7 +3818,7 @@ static int sample_conv_ungrpc(const struct arg *arg_p, struct sample *smp, void
 	while (grpc_left > GRPC_MSG_HEADER_SZ) {
 		size_t grpc_msg_len, left;
 
-		grpc_msg_len = left = ntohl(*(uint32_t *)(pos + GRPC_MSG_COMPRESS_FLAG_SZ));
+		grpc_msg_len = left = ntohl(read_u32(pos + GRPC_MSG_COMPRESS_FLAG_SZ));
 
 		pos += GRPC_MSG_HEADER_SZ;
 		grpc_left -= GRPC_MSG_HEADER_SZ;