diff --git a/plugins/libimhex/source/pattern_language/parser.cpp b/plugins/libimhex/source/pattern_language/parser.cpp
index c55c0cb58..d9e98aaec 100644
--- a/plugins/libimhex/source/pattern_language/parser.cpp
+++ b/plugins/libimhex/source/pattern_language/parser.cpp
@@ -115,6 +115,8 @@ namespace hex::pl {
     ASTNode* Parser::parseFactor() {
         if (MATCHES(sequence(INTEGER)))
             return new ASTNodeLiteral(getValue<Token::Literal>(-1));
+        else if (peek(OPERATOR_PLUS) || peek(OPERATOR_MINUS) || peek(OPERATOR_BITNOT) || peek(OPERATOR_BOOLNOT))
+            return this->parseMathematicalExpression();
         else if (MATCHES(sequence(SEPARATOR_ROUNDBRACKETOPEN))) {
             auto node = this->parseMathematicalExpression();
             if (!MATCHES(sequence(SEPARATOR_ROUNDBRACKETCLOSE))) {