diff --git a/core/Main.cc b/core/Main.cc
index fd8fca1..37d2ed5 100644
--- a/core/Main.cc
+++ b/core/Main.cc
@@ -95,9 +95,13 @@ int main(int argc, char** argv)
         setUsageHelp("c USAGE: %s [options] <input-file> <result-output-file>\n\n  where input may be either in plain or gzipped DIMACS.\n");
         // printf("This is MiniSat 2.0 beta\n");
 
-#if defined(__linux__)
-        fpu_control_t oldcw, newcw;
-        _FPU_GETCW(oldcw); newcw = (oldcw & ~_FPU_EXTENDED) | _FPU_DOUBLE; _FPU_SETCW(newcw);
+#if defined(__linux__) && defined(__x86_64__)
+        fenv_t fenv;
+
+        fegetenv(&fenv);
+        fenv.__control_word &= ~0x300; /* _FPU_EXTENDED */
+        fenv.__control_word |= 0x200; /* _FPU_DOUBLE */
+        fesetenv(&fenv);
         printf("c WARNING: for repeatability, setting FPU to use double precision\n");
 #endif
         // Extra options:
diff --git a/simp/Main.cc b/simp/Main.cc
index 4f4772d..c605f6e 100644
--- a/simp/Main.cc
+++ b/simp/Main.cc
@@ -96,9 +96,13 @@ int main(int argc, char** argv)
       setUsageHelp("c USAGE: %s [options] <input-file> <result-output-file>\n\n  where input may be either in plain or gzipped DIMACS.\n");
         
         
-#if defined(__linux__)
-        fpu_control_t oldcw, newcw;
-        _FPU_GETCW(oldcw); newcw = (oldcw & ~_FPU_EXTENDED) | _FPU_DOUBLE; _FPU_SETCW(newcw);
+#if defined(__linux__) && defined(__x86_64__)
+        fenv_t fenv;
+
+        fegetenv(&fenv);
+        fenv.__control_word &= ~0x300; /* _FPU_EXTENDED */
+        fenv.__control_word |= 0x200; /* _FPU_DOUBLE */
+        fesetenv(&fenv);
         printf("WARNING: for repeatability, setting FPU to use double precision\n");
 #endif
         // Extra options:
diff --git a/utils/System.h b/utils/System.h
index 004d498..2f6d922 100644
--- a/utils/System.h
+++ b/utils/System.h
@@ -21,8 +21,8 @@ OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWA
 #ifndef Glucose_System_h
 #define Glucose_System_h
 
-#if defined(__linux__)
-#include <fpu_control.h>
+#if defined(__linux__) && defined(__x86_64__)
+#include <fenv.h>
 #endif
 
 #include "glucose/mtl/IntTypes.h"