diff --git a/src/lib/tvgRadialGradient.cpp b/src/lib/tvgRadialGradient.cpp
index 73533503..46c4fc40 100644
--- a/src/lib/tvgRadialGradient.cpp
+++ b/src/lib/tvgRadialGradient.cpp
@@ -65,7 +65,7 @@ RadialGradient::~RadialGradient()
 
 Result RadialGradient::radial(float cx, float cy, float radius) noexcept
 {
-    if (radius < FLT_EPSILON) return Result::InvalidArguments;
+    if (radius < 0) return Result::InvalidArguments;
 
     pImpl->cx = cx;
     pImpl->cy = cy;
@@ -88,4 +88,4 @@ Result RadialGradient::radial(float* cx, float* cy, float* radius) const noexcep
 unique_ptr<RadialGradient> RadialGradient::gen() noexcept
 {
     return unique_ptr<RadialGradient>(new RadialGradient);
-}
\ No newline at end of file
+}