diff --git a/integration_tests/CMakeLists.txt b/integration_tests/CMakeLists.txt
index cf7be4b65f..eb4e34dc83 100644
--- a/integration_tests/CMakeLists.txt
+++ b/integration_tests/CMakeLists.txt
@@ -805,7 +805,7 @@ RUN(NAME test_statistics_01  LABELS cpython llvm llvm_jit NOFAST)
 RUN(NAME test_attributes     LABELS cpython llvm llvm_jit)
 # RUN(NAME test_str_attributes LABELS cpython llvm llvm_jit c)
 RUN(NAME kwargs_01           LABELS cpython llvm llvm_jit NOFAST) # renable c
-# RUN(NAME def_func_01         LABELS cpython llvm llvm_jit c)
+RUN(NAME def_func_01         LABELS cpython llvm llvm_jit) # renable c
 
 RUN(NAME func_inline_01 LABELS llvm llvm_jit c wasm)
 RUN(NAME func_inline_02 LABELS cpython llvm llvm_jit c)
diff --git a/libasr b/libasr
index 4a52ccea1b..df83d90fdf 160000
--- a/libasr
+++ b/libasr
@@ -1 +1 @@
-Subproject commit 4a52ccea1b6157a259ac478bd84477d119d4adbd
+Subproject commit df83d90fdf7d61c56abddb2643328c7cc9a0ebb1
diff --git a/src/lpython/semantics/python_ast_to_asr.cpp b/src/lpython/semantics/python_ast_to_asr.cpp
index 8b832f0c5b..c03828afdc 100644
--- a/src/lpython/semantics/python_ast_to_asr.cpp
+++ b/src/lpython/semantics/python_ast_to_asr.cpp
@@ -1178,7 +1178,7 @@ class CommonVisitor : public AST::BaseVisitor<StructType> {
                 size_t missed_args_count =0;
                 for (size_t def_arg = args.size(); def_arg < func->n_args; def_arg++){
                     ASR::Variable_t* var = ASRUtils::EXPR2VAR(func->m_args[def_arg]);
-                    if(var->m_symbolic_value == nullptr) {
+                    if(var->m_presence != ASR::presenceType::Optional) {
                         missed_args_names+= "'" + std::string(var->m_name) + "' and ";
                         missed_args_count++;
                     } else {
@@ -4570,7 +4570,8 @@ class SymbolTableVisitor : public CommonVisitor<SymbolTableVisitor> {
             std::string arg_s = arg;
             ASR::expr_t *value = nullptr;
             ASR::expr_t *init_expr = nullptr;
-            if (i >= default_arg_index_start){
+            bool is_optional_arg = i >= default_arg_index_start;
+            if (is_optional_arg){
                 size_t default_arg_index = i - default_arg_index_start;
                 this->visit_expr(*(x.m_args.m_defaults[default_arg_index]));
                 init_expr = ASRUtils::EXPR(tmp);
@@ -4593,7 +4594,7 @@ class SymbolTableVisitor : public CommonVisitor<SymbolTableVisitor> {
             }
             ASR::accessType s_access = ASR::accessType::Public;
             ASR::presenceType s_presence = ASR::presenceType::Required;
-            if (i >= default_arg_index_start){
+            if (is_optional_arg){
             	s_presence = ASR::presenceType::Optional;
             }
             bool value_attr = false;