diff --git a/config.tests/unix/libpng/libpng.cpp b/config.tests/unix/libpng/libpng.cpp
index 6808b5fcb3d..d3f836e49e4 100644
--- a/config.tests/unix/libpng/libpng.cpp
+++ b/config.tests/unix/libpng/libpng.cpp
@@ -39,10 +39,6 @@
 
 #include <png.h>
 
-#if !defined(PNG_LIBPNG_VER) || PNG_LIBPNG_VER < 10017
-#  error "Required libpng version 1.0.17 not found."
-#endif
-
 int main(int, char **)
 {
     png_structp png_ptr;