diff --git a/src/de/dhbwstuttgart/core/JavaTXCompiler.java b/src/de/dhbwstuttgart/core/JavaTXCompiler.java
index 83f5aeb6..08614f40 100644
--- a/src/de/dhbwstuttgart/core/JavaTXCompiler.java
+++ b/src/de/dhbwstuttgart/core/JavaTXCompiler.java
@@ -134,12 +134,21 @@ public class JavaTXCompiler {
 				}
 				//.collect(Collectors.toCollection(ArrayList::new))))
 				System.out.println(xConsSet);
-				Set<String> paraTypeVarNames = allClasses.stream().map(x -> x.getMethods().stream().map(y -> y.getParameterList().getFormalparalist()
+				Set<String> methodParaTypeVarNames = allClasses.stream().map(x -> x.getMethods().stream().map(y -> y.getParameterList().getFormalparalist()
 						.stream().filter(z -> z.getType() instanceof TypePlaceholder)
 						.map(z -> ((TypePlaceholder)z.getType()).getName()).collect(Collectors.toCollection(HashSet::new)))
 						.reduce(new HashSet<String>(), (a,b) -> { a.addAll(b); return a;}, (a,b) -> { a.addAll(b); return a;} )  )
 						.reduce(new HashSet<String>(), (a,b) -> { a.addAll(b); return a;} );
 				
+				Set<String> constructorParaTypeVarNames = allClasses.stream().map(x -> x.getConstructors().stream().map(y -> y.getParameterList().getFormalparalist()
+						.stream().filter(z -> z.getType() instanceof TypePlaceholder)
+						.map(z -> ((TypePlaceholder)z.getType()).getName()).collect(Collectors.toCollection(HashSet::new)))
+						.reduce(new HashSet<String>(), (a,b) -> { a.addAll(b); return a;}, (a,b) -> { a.addAll(b); return a;} )  )
+						.reduce(new HashSet<String>(), (a,b) -> { a.addAll(b); return a;} );
+				
+				Set<String> paraTypeVarNames = methodParaTypeVarNames;
+				paraTypeVarNames.addAll(constructorParaTypeVarNames);
+				
 				Set<String> returnTypeVarNames = allClasses.stream().map(x -> x.getMethods().stream().filter(y -> y.getReturnType() instanceof TypePlaceholder)
 						.map(z -> ((TypePlaceholder)z.getReturnType()).getName()).collect(Collectors.toCollection(HashSet::new))).reduce((a,b) -> { a.addAll(b); return a;} ).get();