diff --git a/lib/maths/mathfunc.cpp b/lib/maths/mathfunc.cpp
index 45a1990..1bf4399 100644
--- a/lib/maths/mathfunc.cpp
+++ b/lib/maths/mathfunc.cpp
@@ -38,7 +38,7 @@ double gctl::random(double low, double hig)
 	return f*(hig-low) + low;
 }
 
-std::complex<double> random(std::complex<double> low, std::complex<double> hig)
+std::complex<double> gctl::random(std::complex<double> low, std::complex<double> hig)
 {
 	std::complex<double> c;
 	double r = (double) rand()/RAND_MAX;