diff --git a/m4/curl-compilers.m4 b/m4/curl-compilers.m4
index 8d812b5e54..ddd44acb53 100644
--- a/m4/curl-compilers.m4
+++ b/m4/curl-compilers.m4
@@ -567,12 +567,14 @@ AC_DEFUN([CURL_SET_COMPILER_BASIC_OPTS], [
         dnl #147: declaration is incompatible with 'previous one'
         dnl #165: too few arguments in function call
         dnl #266: function declared implicitly
-        tmp_CPPFLAGS="$tmp_CPPFLAGS -we140,147,165,266"
+        tmp_CPPFLAGS="$tmp_CPPFLAGS -diag-error 140,147,165,266"
         dnl Disable some remarks
         dnl #279: controlling expression is constant
         dnl #981: operands are evaluated in unspecified order
+        dnl #1025: zero extending result of unary operation
         dnl #1469: "cc" clobber ignored
-        tmp_CPPFLAGS="$tmp_CPPFLAGS -wd279,981,1469"
+        dnl #2259: non-pointer conversion from X to Y may lose significant bits
+        tmp_CPPFLAGS="$tmp_CPPFLAGS -diag-disable 279,981,1025,1469,2259"
         ;;
         #
       INTEL_WINDOWS_C)