diff --git a/ares/configure.ac b/ares/configure.ac
index 97d830434d46a4937a3f2a92403d8480fd444ed4..db9576a122a3b277b05b92e993ebbfeca051bedb 100644
--- a/ares/configure.ac
+++ b/ares/configure.ac
@@ -251,6 +251,8 @@ if test "$curl_cv_have_def___INTEL_COMPILER" = "yes"; then
   CPPFLAGS="$CPPFLAGS -wd 981,1469"
   dnl Disable use of ANSI C aliasing rules in optimizations
   CFLAGS="$CFLAGS -no-ansi-alias"
+  dnl Disable floating point optimizations
+  CFLAGS="$CFLAGS -fp-model precise -mp"
 else
   AC_MSG_RESULT([no])
 fi
diff --git a/configure.ac b/configure.ac
index d16fc5ca1f21c08c2e94401f84f6390ea5439d37..ca58f9058ee292467930b8471b04cf02c22fc806 100644
--- a/configure.ac
+++ b/configure.ac
@@ -325,6 +325,8 @@ if test "$curl_cv_have_def___INTEL_COMPILER" = "yes"; then
   CPPFLAGS="$CPPFLAGS -wd 981,1469"
   dnl Disable use of ANSI C aliasing rules in optimizations
   CFLAGS="$CFLAGS -no-ansi-alias"
+  dnl Disable floating point optimizations
+  CFLAGS="$CFLAGS -fp-model precise -mp"
 else
   AC_MSG_RESULT([no])
 fi