diff --git a/alib2algo/src/arbology/exact/ExactTreePatternAutomaton.h b/alib2algo/src/arbology/exact/ExactTreePatternAutomaton.h
index 86569ee64e639066afe527282f29070dd6b92b4a..f7ab52cbf621b0bef418420b2aa85b675c4c62ee 100644
--- a/alib2algo/src/arbology/exact/ExactTreePatternAutomaton.h
+++ b/alib2algo/src/arbology/exact/ExactTreePatternAutomaton.h
@@ -63,7 +63,7 @@ automaton::InputDrivenNPDA < common::ranked_symbol < SymbolType, RankType >, cha
 	for ( const common::ranked_symbol < SymbolType, RankType > & symbol : tree.getContent ( ) ) {
 		res.addState ( i );
 		res.addTransition ( i - 1, symbol, i );
-		res.addTransition ( 0, std::move ( symbol ), i );
+		res.addTransition ( 0, symbol, i );
 
 		if ( tree.getBars ( ).count ( symbol ) ) {
 			unsigned source = subtreeJumps.back ( );