diff --git a/src/main/java/com/auberer/compilerdesignlectureproject/ast/ASTFctDefNode.java b/src/main/java/com/auberer/compilerdesignlectureproject/ast/ASTFctDefNode.java
index 4559545a..48ad9f33 100644
--- a/src/main/java/com/auberer/compilerdesignlectureproject/ast/ASTFctDefNode.java
+++ b/src/main/java/com/auberer/compilerdesignlectureproject/ast/ASTFctDefNode.java
@@ -30,8 +30,8 @@ public ASTTypeNode getType(){
     public ASTParamLstNode getParams(){
         return getChild(ASTParamLstNode.class,0);
     }
-    public ASTStmtLstNode getBody(){
-        return getChild(ASTStmtLstNode.class,0);
+    public ASTLogicNode getBody(){
+        return getChild(ASTLogicNode.class,0);
     }
 
 }
diff --git a/src/main/java/com/auberer/compilerdesignlectureproject/ast/ASTParamLstNode.java b/src/main/java/com/auberer/compilerdesignlectureproject/ast/ASTParamLstNode.java
index 0327e1b1..396618fc 100644
--- a/src/main/java/com/auberer/compilerdesignlectureproject/ast/ASTParamLstNode.java
+++ b/src/main/java/com/auberer/compilerdesignlectureproject/ast/ASTParamLstNode.java
@@ -4,6 +4,7 @@
 import lombok.Getter;
 import lombok.Setter;
 
+import java.util.ArrayList;
 import java.util.List;
 import java.util.Set;
 
@@ -11,7 +12,7 @@
 @Setter
 public class ASTParamLstNode extends ASTNode {
 
-    List<String> paramNames;
+    List<String> paramNames = new ArrayList<>();
 
     @Override
     public <T> T accept(ASTVisitor<T> visitor) {
diff --git a/src/main/java/com/auberer/compilerdesignlectureproject/parser/Parser.java b/src/main/java/com/auberer/compilerdesignlectureproject/parser/Parser.java
index 1348a4a3..c5d71045 100644
--- a/src/main/java/com/auberer/compilerdesignlectureproject/parser/Parser.java
+++ b/src/main/java/com/auberer/compilerdesignlectureproject/parser/Parser.java
@@ -379,10 +379,12 @@ public ASTParamLstNode parseParamLst() {
     enterNode(node);
 
     parseType();
+    node.addParamName(lexer.getToken().getText());
     lexer.expect(TokenType.TOK_IDENTIFIER);
     while (lexer.getToken().getType() == TokenType.TOK_COMMA) {
       lexer.expect(TokenType.TOK_COMMA);
       parseType();
+      node.addParamName(lexer.getToken().getText());
       lexer.expect(TokenType.TOK_IDENTIFIER);
     }
     exitNode(node);
diff --git a/src/main/java/com/auberer/compilerdesignlectureproject/sema/SymbolTableBuilder.java b/src/main/java/com/auberer/compilerdesignlectureproject/sema/SymbolTableBuilder.java
index 493785e9..060e89fc 100644
--- a/src/main/java/com/auberer/compilerdesignlectureproject/sema/SymbolTableBuilder.java
+++ b/src/main/java/com/auberer/compilerdesignlectureproject/sema/SymbolTableBuilder.java
@@ -162,8 +162,9 @@ public Void visitFctDef(ASTFctDefNode node) {
 
     currentScopes.push(functionScope);
 
-    //visit(node.getBody());
+
     visit(node.getParams());
+    visit(node.getBody());
 
     currentScopes.pop();
 
@@ -194,8 +195,8 @@ public Void visitFctCall(ASTFctCallNode node) {
 
     visitChildren(node);
 
-    if (currentScopes.peek().lookupSymbolStrict(node.getName(), node) == null) {
-      throw new SemaError(node, "Function not defined");
+    if (currentScopes.peek().lookupSymbol(node.getName(), node) == null) {
+      throw new SemaError(node, "Function with name " + node.getName() + " not defined");
     }
 
     return null;
diff --git a/src/test/java/com/auberer/compilerdesignlectureproject/parser/FunctionCallTest.java b/src/test/java/com/auberer/compilerdesignlectureproject/parser/FunctionCallTest.java
index 2b07e4e5..6138c418 100644
--- a/src/test/java/com/auberer/compilerdesignlectureproject/parser/FunctionCallTest.java
+++ b/src/test/java/com/auberer/compilerdesignlectureproject/parser/FunctionCallTest.java
@@ -1,13 +1,13 @@
 package com.auberer.compilerdesignlectureproject.parser;
 
-import com.auberer.compilerdesignlectureproject.ast.ASTCallParamsNode;
-import com.auberer.compilerdesignlectureproject.ast.ASTFctCallNode;
+import com.auberer.compilerdesignlectureproject.ast.*;
 import com.auberer.compilerdesignlectureproject.lexer.Lexer;
 import com.auberer.compilerdesignlectureproject.lexer.Token;
 import com.auberer.compilerdesignlectureproject.lexer.TokenType;
 import com.auberer.compilerdesignlectureproject.reader.CodeLoc;
 import com.auberer.compilerdesignlectureproject.reader.Reader;
 import com.auberer.compilerdesignlectureproject.sema.SymbolTableBuilder;
+import com.auberer.compilerdesignlectureproject.sema.SymbolTableEntry;
 import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.DisplayName;
 import org.junit.jupiter.api.Test;
@@ -61,14 +61,35 @@ void testFunctionCall() {
     @Test
     @DisplayName("Integration test for function call")
     void testIntegrationTestForFunctionCall() {
-        String fctDef = "call myFunc(7);";
+        String fctDef = "func int myFunc(int x) int i = 17; return x; cnuf func int fn2() call myFunc(7); return 2; cnuf";
+
         Reader reader = new Reader(fctDef);
         Lexer lexer = new Lexer(reader, false);
         Parser parser = new Parser(lexer);
 
-        ASTFctCallNode astFctCallNode = parser.parseFctCall();
+        ASTEntryNode parseNode = parser.parse();
+
+        ASTFctDefNode defNode = parseNode.getChild(ASTFctDefNode.class, 0);
+        ASTFctDefNode defWithCallNode = parseNode.getChild(ASTFctDefNode.class, 1);
+
+        ASTFctCallNode callNode = defWithCallNode.getChild(ASTLogicNode.class, 0).getChild(ASTStmtLstNode.class, 0).getChild(ASTStmtNode.class, 0).getChild(ASTAssignStmtNode.class, 0).getChild(ASTLogicalExprNode.class, 0).getChild(ASTCompareExprNode.class, 0).getChild(ASTAdditiveExprNode.class, 0).getChild(ASTMultiplicativeExprNode.class, 0).getChild(ASTPrefixExprNode.class, 0).getChild(ASTAtomicExprNode.class, 0).getFctCall();
+
         SymbolTableBuilder symboltablebuilder = new SymbolTableBuilder();
+        symboltablebuilder.visitFctDef(defNode);
+        symboltablebuilder.visitFctCall(callNode);
+    }
 
-        symboltablebuilder.visitFctCall(astFctCallNode);
+    private static void searchNodeForFctCallNode(ASTNode node, String path) {
+        if(node.getChildren().isEmpty()){
+            System.out.println("no node found for path: " + path);
+        }
+        node.getChildren().forEach((child) -> {
+            if (child instanceof ASTFctCallNode) {
+                System.out.println(path + "ASTFctCallNode");
+            }
+            else {
+                searchNodeForFctCallNode(child, path  + child.getClass().toString()+  " -> ");
+            }
+        });
     }
 }