diff --git a/src/analyzer/Tag.h b/src/analyzer/Tag.h
index 92aff38189..d45501070b 100644
--- a/src/analyzer/Tag.h
+++ b/src/analyzer/Tag.h
@@ -43,7 +43,7 @@ public:
 	 * Returns false if the tag represents an error value rather than a
 	 * legal analyzer type.
 	 */
-	explicit operator bool() const	{ return *this != Tag(); }
+	explicit operator bool() const	{ return *this != Error; }
 
 	/**
 	 * Assignment operator.
diff --git a/src/file_analysis/Tag.h b/src/file_analysis/Tag.h
index a0f6634f64..9e35251461 100644
--- a/src/file_analysis/Tag.h
+++ b/src/file_analysis/Tag.h
@@ -42,7 +42,7 @@ public:
 	 * Returns false if the tag represents an error value rather than a
 	 * legal analyzer type.
 	 */
-	explicit operator bool() const	{ return *this != Tag(); }
+	explicit operator bool() const	{ return *this != Error; }
 
 	/**
 	 * Assignment operator.
diff --git a/src/input/Tag.h b/src/input/Tag.h
index 1d4bcc2f9f..2d7217afb0 100644
--- a/src/input/Tag.h
+++ b/src/input/Tag.h
@@ -43,7 +43,7 @@ public:
 	 * Returns false if the tag represents an error value rather than a
 	 * legal reader type.
 	 */
-	explicit operator bool() const	{ return *this != Tag(); }
+	explicit operator bool() const	{ return *this != Error; }
 
 	/**
 	 * Assignment operator.
diff --git a/src/logging/Tag.h b/src/logging/Tag.h
index 07c45826b8..c44fd2831b 100644
--- a/src/logging/Tag.h
+++ b/src/logging/Tag.h
@@ -43,7 +43,7 @@ public:
 	 * Returns false if the tag represents an error value rather than a
 	 * legal writer type.
 	 */
-	explicit operator bool() const	{ return *this != Tag(); }
+	explicit operator bool() const	{ return *this != Error; }
 
 	/**
 	 * Assignment operator.