diff --git a/Modules/_decimal/libmpdec/mpdecimal.c b/Modules/_decimal/libmpdec/mpdecimal.c
index 21d222277c3..593f9f5e03a 100644
--- a/Modules/_decimal/libmpdec/mpdecimal.c
+++ b/Modules/_decimal/libmpdec/mpdecimal.c
@@ -43,6 +43,7 @@
 #ifdef PPRO
   #if defined(_MSC_VER)
     #include <float.h>
+    #pragma float_control(precise, on)
     #pragma fenv_access(on)
   #elif !defined(__OpenBSD__) && !defined(__NetBSD__)
     /* C99 */