3 files changed, 3 insertions, 3 deletions
diff --git a/src/mxf.h b/src/mxf.h
index b4efd14f..f8be9844 100644
--- a/src/mxf.h
+++ b/src/mxf.h
@@ -52,7 +52,7 @@ public:
 
 	/** @return true if the data is encrypted */
 	bool encrypted () const {
-		return _key_id;
+		return static_cast<bool>(_key_id);
 	}
 
 	/** Set the ID of the key that is used for encryption/decryption.
diff --git a/src/reel_mxf.h b/src/reel_mxf.h
index 6989a81f..4235392e 100644
--- a/src/reel_mxf.h
+++ b/src/reel_mxf.h
@@ -51,7 +51,7 @@ public:
 	 *  that its content is encrypted.
 	 */
 	bool encrypted () const {
-		return _key_id;
+		return static_cast<bool>(_key_id);
 	}
 
 	/** @return Key ID to describe the key that encrypts this asset's
diff --git a/src/ref.h b/src/ref.h
index 8194e585..e2e2aa01 100644
--- a/src/ref.h
+++ b/src/ref.h
@@ -108,7 +108,7 @@ public:
 
 	/** @return true if a shared_ptr is known for this Ref */
 	bool resolved () const {
-		return _object;
+		return static_cast<bool>(_object);
 	}
 
 private: