diff --git a/alib/src/regexp/RegExp.cpp b/alib/src/regexp/RegExp.cpp
index 65b63e54a07c81bd448925f5dc9490030aed1712..3d8f2dbe1373c71a98cdfeef7a5db82056ebdd3b 100644
--- a/alib/src/regexp/RegExp.cpp
+++ b/alib/src/regexp/RegExp.cpp
@@ -98,6 +98,10 @@ bool RegExp::operator==(const RegExp& other) const {
 	return *(this->regExp) == *(other.regExp);
 }
 
+bool RegExp::operator!=(const RegExp& other) const {
+	return *(this->regExp) != *(other.regExp);
+}
+
 bool RegExp::operator>(const RegExp& other) const {
 	return *(this->regExp) > *(other.regExp);
 }
diff --git a/alib/src/regexp/RegExp.h b/alib/src/regexp/RegExp.h
index def92709e7c4c2a71a2cf05931f046405ba064b8..36b5de12adeab6ada54b0b62329897a26a03cbbc 100644
--- a/alib/src/regexp/RegExp.h
+++ b/alib/src/regexp/RegExp.h
@@ -77,9 +77,10 @@ public:
 	 * @param regexp RegExp to print
 	 */
 	friend ostream& operator<<(ostream& out, RegExp& regexp);
-	
+
 	bool operator<(const RegExp&) const;
 	bool operator==(const RegExp&) const;
+	bool operator!=(const RegExp&) const;
 	bool operator>(const RegExp&) const;
 };