diff --git a/src/isct/triangle.h b/src/isct/cork_triangle.h
similarity index 99%
rename from src/isct/triangle.h
rename to src/isct/cork_triangle.h
index dbf087a..28b1d96 100644
--- a/src/isct/triangle.h
+++ b/src/isct/cork_triangle.h
@@ -1,3 +1,14 @@
+#ifndef CORK_TRIANGLE_H
+#define CORK_TRIANGLE_H
+
+/* Define REAL type */
+#ifndef SINGLE
+#define REAL double
+#else
+#define REAL float
+#endif
+
+
 /*****************************************************************************/
 /*                                                                           */
 /*  (triangle.h)                                                             */
@@ -287,3 +298,4 @@ void trifree(void *memptr);
 /*void triangulate();
 void trifree();*/
 /*#endif*/ /* not ANSI_DECLARATORS */
+#endif /* CORK_TRIANGLE_H */
diff --git a/src/isct/triangle.c b/src/isct/triangle.c
index 08dcc87..64cdaa9 100644
--- a/src/isct/triangle.c
+++ b/src/isct/triangle.c
@@ -354,7 +354,7 @@
 #include <fpu_control.h>
 #endif /* LINUX */
 #ifdef TRILIBRARY
-#include "triangle.h"
+#include "cork_triangle.h"
 #endif /* TRILIBRARY */
 
 /* A few forward declarations.                                               */
diff --git a/src/mesh/mesh.isct.tpp b/src/mesh/mesh.isct.tpp
index 6c48930..f52047b 100644
--- a/src/mesh/mesh.isct.tpp
+++ b/src/mesh/mesh.isct.tpp
@@ -35,7 +35,7 @@
 
 #define REAL double
 extern "C" {
-#include "triangle.h"
+#include "cork_triangle.h"
 }
 
 struct GenericVertType;