diff --git a/src/add-ons/kernel/file_systems/ext2/kernel_interface.cpp b/src/add-ons/kernel/file_systems/ext2/kernel_interface.cpp
index 5804d1f9ab..8fca8d5496 100644
--- a/src/add-ons/kernel/file_systems/ext2/kernel_interface.cpp
+++ b/src/add-ons/kernel/file_systems/ext2/kernel_interface.cpp
@@ -50,7 +50,7 @@ ext2_identify_partition(int fd, partition_data *partition, void **_cookie)
 	ext2_super_block superBlock;
 	status_t status = Volume::Identify(fd, &superBlock);
 	if (status != B_OK)
-		return status;
+		return -1;
 
 	identify_cookie *cookie = new identify_cookie;
 	memcpy(&cookie->super_block, &superBlock, sizeof(ext2_super_block));
diff --git a/src/add-ons/kernel/partitioning_systems/efi/efi_gpt.cpp b/src/add-ons/kernel/partitioning_systems/efi/efi_gpt.cpp
index ea554a9047..26fe9b482d 100644
--- a/src/add-ons/kernel/partitioning_systems/efi/efi_gpt.cpp
+++ b/src/add-ons/kernel/partitioning_systems/efi/efi_gpt.cpp
@@ -457,7 +457,7 @@ efi_gpt_identify_partition(int fd, partition_data *partition, void **_cookie)
 	status_t status = header->InitCheck();
 	if (status < B_OK) {
 		delete header;
-		return status;
+		return -1;
 	}
 
 	*_cookie = header;