diff --git a/sharedmem.c b/sharedmem.c
index fb31720..d8b5ecd 100644
--- a/sharedmem.c
+++ b/sharedmem.c
@@ -348,7 +348,7 @@ static void *rmtfs_mem_ptr(struct rmtfs_mem *rmem, unsigned long phys_address, s
 	if (start < rmem->address || end > rmem->address + rmem->size)
 		return NULL;
 
-	return rmem->base + phys_address - rmem->address;
+	return (char*)rmem->base + phys_address - rmem->address;
 }
 
 ssize_t rmtfs_mem_read(struct rmtfs_mem *rmem, unsigned long phys_address, void *buf, ssize_t len)
diff --git a/storage.c b/storage.c
index 4c78ab3..c8e69ed 100644
--- a/storage.c
+++ b/storage.c
@@ -203,13 +203,13 @@ ssize_t storage_pread(const struct rmtfd *rmtfd, void *buf, size_t nbyte, off_t
 	} else {
 		n = MIN(nbyte, rmtfd->shadow_len - offset);
 		if (n > 0)
-			memcpy(buf, rmtfd->shadow_buf + offset, n);
+			memcpy(buf, (char*)rmtfd->shadow_buf + offset, n);
 		else
 			n = 0;
 	}
 
 	if (n < nbyte)
-		memset(buf + n, 0, nbyte - n);
+		memset((char*)buf + n, 0, nbyte - n);
 
 	return nbyte;
 }
@@ -239,7 +239,7 @@ ssize_t storage_pwrite(struct rmtfd *rmtfd, const void *buf, size_t nbyte, off_t
 		rmtfd->shadow_len = new_len;
 	}
 
-	memcpy(rmtfd->shadow_buf + offset, buf, nbyte);
+	memcpy((char*)rmtfd->shadow_buf + offset, buf, nbyte);
 
 	return nbyte;
 }