diff --git a/Common/File/DirListing.h b/Common/File/DirListing.h
index cea0fbb37a..4d4cf7d10d 100644
--- a/Common/File/DirListing.h
+++ b/Common/File/DirListing.h
@@ -19,10 +19,10 @@ struct FileInfo {
 	bool isWritable = false;
 	uint64_t size = 0;
 
-	uint64_t atime;
-	uint64_t mtime;
-	uint64_t ctime;
-	uint32_t access;  // st_mode & 0x1ff
+	uint64_t atime = 0;
+	uint64_t mtime = 0;
+	uint64_t ctime = 0;
+	uint32_t access = 0;  // st_mode & 0x1ff
 
 	// Currently only supported for Android storage files.
 	// Other places use different methods to get this.
diff --git a/Core/FileSystems/DirectoryFileSystem.h b/Core/FileSystems/DirectoryFileSystem.h
index 2c7a2ca709..0bcd3f8bfc 100644
--- a/Core/FileSystems/DirectoryFileSystem.h
+++ b/Core/FileSystems/DirectoryFileSystem.h
@@ -116,7 +116,7 @@ private:
 	struct OpenFileEntry {
 		DirectoryFileHandle hFile = DirectoryFileHandle::NORMAL;
 		std::string guestFilename;
-		FileAccess access;
+		FileAccess access = FILEACCESS_NONE;
 	};
 
 	typedef std::map<u32, OpenFileEntry> EntryMap;
diff --git a/Core/FileSystems/ISOFileSystem.h b/Core/FileSystems/ISOFileSystem.h
index 1941cc998c..676964f079 100644
--- a/Core/FileSystems/ISOFileSystem.h
+++ b/Core/FileSystems/ISOFileSystem.h
@@ -55,21 +55,20 @@ public:
 
 private:
 	struct TreeEntry {
-		TreeEntry() : flags(0), valid(false) {}
 		~TreeEntry();
 
 		std::string name;
-		u32 flags;
-		u32 startingPosition;
-		s64 size;
-		bool isDirectory;
+		u32 flags = 0;
+		u32 startingPosition = 0;
+		s64 size = 0;
+		bool isDirectory = false;
 
-		u32 startsector;
-		u32 dirsize;
+		u32 startsector = 0;
+		u32 dirsize = 0;
 
-		TreeEntry *parent;
+		TreeEntry *parent = nullptr;
 
-		bool valid;
+		bool valid = false;
 		std::vector<TreeEntry *> children;
 	};