diff --git a/Lib/javascript/jsc/ccomplex.i b/Lib/javascript/jsc/ccomplex.i
index 9c3080b60..00680d3b4 100644
--- a/Lib/javascript/jsc/ccomplex.i
+++ b/Lib/javascript/jsc/ccomplex.i
@@ -18,7 +18,9 @@
 
 %swig_cplxflt_convn(float _Complex, CCplxConst, creal, cimag);
 %swig_cplxdbl_convn(double _Complex, CCplxConst, creal, cimag);
+%swig_cplxdbl_convn(_Complex, CCplxConst, creal, cimag);
 
 /* declaring the typemaps */
 %typemaps_primitive(SWIG_TYPECHECK_CPLXFLT, float _Complex);
 %typemaps_primitive(SWIG_TYPECHECK_CPLXDBL, double _Complex);
+%typemaps_primitive(SWIG_TYPECHECK_CPLXDBL, _Complex);
diff --git a/Lib/javascript/v8/ccomplex.i b/Lib/javascript/v8/ccomplex.i
index 7669cb86a..a753ae180 100644
--- a/Lib/javascript/v8/ccomplex.i
+++ b/Lib/javascript/v8/ccomplex.i
@@ -18,7 +18,9 @@
 
 %swig_cplxflt_convn(float _Complex, CCplxConst, creal, cimag);
 %swig_cplxdbl_convn(double _Complex, CCplxConst, creal, cimag);
+%swig_cplxdbl_convn(_Complex, CCplxConst, creal, cimag);
 
 /* declaring the typemaps */
 %typemaps_primitive(SWIG_TYPECHECK_CPLXFLT, float _Complex);
 %typemaps_primitive(SWIG_TYPECHECK_CPLXDBL, double _Complex);
+%typemaps_primitive(SWIG_TYPECHECK_CPLXDBL, _Complex);
diff --git a/Lib/python/ccomplex.i b/Lib/python/ccomplex.i
index eba278905..1652816ca 100644
--- a/Lib/python/ccomplex.i
+++ b/Lib/python/ccomplex.i
@@ -18,7 +18,9 @@
 
 %swig_cplxflt_convn(float _Complex, CCplxConst, creal, cimag);
 %swig_cplxdbl_convn(double _Complex, CCplxConst, creal, cimag);
+%swig_cplxdbl_convn(_Complex, CCplxConst, creal, cimag);
 
 /* declaring the typemaps */
 %typemaps_primitive(SWIG_TYPECHECK_CPLXFLT, float _Complex);
 %typemaps_primitive(SWIG_TYPECHECK_CPLXDBL, double _Complex);
+%typemaps_primitive(SWIG_TYPECHECK_CPLXDBL, _Complex);
diff --git a/Source/Swig/typesys.c b/Source/Swig/typesys.c
index b306c95e8..d6d6bcc88 100644
--- a/Source/Swig/typesys.c
+++ b/Source/Swig/typesys.c
@@ -1457,6 +1457,8 @@ int SwigType_type(const SwigType *t) {
     return T_FLTCPLX;
   if (!cparse_cplusplus && (strcmp(c, "double _Complex") == 0))
     return T_DBLCPLX;
+  if (!cparse_cplusplus && (strcmp(c, "_Complex") == 0))
+    return T_COMPLEX;
   if (strcmp(c, "void") == 0)
     return T_VOID;
   if (strcmp(c, "bool") == 0)