diff --git a/EKF/optflow_fusion.cpp b/EKF/optflow_fusion.cpp
index c680f3a846..631f7064f1 100644
--- a/EKF/optflow_fusion.cpp
+++ b/EKF/optflow_fusion.cpp
@@ -43,7 +43,7 @@
 #include "ekf.h"
 #include <ecl.h>
 #include <mathlib/mathlib.h>
-#include <cfloat>
+#include <float.h>
 
 void Ekf::fuseOptFlow()
 {
diff --git a/geo/geo.cpp b/geo/geo.cpp
index 95baec79ca..4888b8bbc3 100644
--- a/geo/geo.cpp
+++ b/geo/geo.cpp
@@ -47,7 +47,7 @@
 
 #include <mathlib/mathlib.h>
 #include <matrix/math.hpp>
-#include <cfloat>
+#include <float.h>
 
 using matrix::wrap_pi;
 using matrix::wrap_2pi;
diff --git a/validation/data_validator_group.cpp b/validation/data_validator_group.cpp
index 135c66bd84..82852ef21f 100644
--- a/validation/data_validator_group.cpp
+++ b/validation/data_validator_group.cpp
@@ -41,7 +41,7 @@
 
 #include "data_validator_group.h"
 #include <ecl.h>
-#include <cfloat>
+#include <float.h>
 
 DataValidatorGroup::DataValidatorGroup(unsigned siblings)
 {