diff --git a/ext/symengine/ruby_complex.c b/ext/symengine/ruby_complex.c
index 4f7734b..e3ba588 100644
--- a/ext/symengine/ruby_complex.c
+++ b/ext/symengine/ruby_complex.c
@@ -2,10 +2,10 @@
 
 VALUE ccomplex_real_part(VALUE self)
 {
-    return function_onearg(complex_real_part, self);
+    return function_onearg(complex_base_real_part, self);
 }
 
 VALUE ccomplex_imaginary_part(VALUE self)
 {
-    return function_onearg(complex_imaginary_part, self);
+    return function_onearg(complex_base_imaginary_part, self);
 }
diff --git a/ext/symengine/ruby_complex_double.c b/ext/symengine/ruby_complex_double.c
index f39e2a9..a4285f8 100644
--- a/ext/symengine/ruby_complex_double.c
+++ b/ext/symengine/ruby_complex_double.c
@@ -2,10 +2,10 @@
 
 VALUE ccomplex_double_real_part(VALUE self)
 {
-    return function_onearg(complex_double_real_part, self);
+    return function_onearg(complex_base_real_part, self);
 }
 
 VALUE ccomplex_double_imaginary_part(VALUE self)
 {
-    return function_onearg(complex_double_imaginary_part, self);
+    return function_onearg(complex_base_imaginary_part, self);
 }
diff --git a/ext/symengine/symengine_utils.c b/ext/symengine/symengine_utils.c
index 60c8d92..f78aba0 100644
--- a/ext/symengine/symengine_utils.c
+++ b/ext/symengine/symengine_utils.c
@@ -271,8 +271,8 @@ void raise_exception(symengine_exceptions_t error_code)
         case SYMENGINE_NOT_IMPLEMENTED:
             str = "Not Implemented";
             break;
-        case SYMENGINE_UNDEFINED:
-            str = "Undefined";
+        case SYMENGINE_DOMAIN_ERROR:
+            str = "Domain Error";
             break;
         case SYMENGINE_PARSE_ERROR:
             str = "Parse Error";