diff --git a/poppler/SplashOutputDev.cc b/poppler/SplashOutputDev.cc
index 13d090c..9803d38 100644
--- a/poppler/SplashOutputDev.cc
+++ b/poppler/SplashOutputDev.cc
@@ -94,6 +94,13 @@ extern "C" int unlink(char *filename);
 #endif
 #endif
 
+#if __cplusplus > 199711L
+#include <cmath>
+#ifndef isfinite
+#define isfinite(x) std::isfinite(x)
+#endif
+#endif
+
 static inline void convertGfxColor(SplashColorPtr dest,
                                    SplashColorMode colorMode,
                                    GfxColorSpace *colorSpace,