diff --git a/intern/elbeem/intern/isosurface.cpp b/intern/elbeem/intern/isosurface.cpp
index 9925565b85d..751a48cebba 100644
--- a/intern/elbeem/intern/isosurface.cpp
+++ b/intern/elbeem/intern/isosurface.cpp
@@ -13,6 +13,10 @@
 #include <algorithm>
 #include <stdio.h>
 
+#ifdef sun
+#include "ieeefp.h"
+#endif
+
 // just use default rounding for platforms where its not available
 #ifndef round
 #define round(x) (x)
diff --git a/intern/elbeem/intern/mvmcoords.h b/intern/elbeem/intern/mvmcoords.h
index 51b0958ed78..889f5058a09 100644
--- a/intern/elbeem/intern/mvmcoords.h
+++ b/intern/elbeem/intern/mvmcoords.h
@@ -27,6 +27,10 @@
 #endif
 #endif
 
+#ifdef sun
+#include "ieeefp.h"
+#endif
+
 // weight and triangle index
 class mvmIndexWeight {
 	public:
diff --git a/intern/elbeem/intern/solver_class.h b/intern/elbeem/intern/solver_class.h
index acfa095e1d8..f61ef72e8ab 100644
--- a/intern/elbeem/intern/solver_class.h
+++ b/intern/elbeem/intern/solver_class.h
@@ -100,6 +100,7 @@
 
 // sirdude fix for solaris
 #if !defined(linux) && defined(sun)
+#include "ieeefp.h"
 #ifndef expf
 #define expf(x) exp((double)(x))
 #endif