diff --git a/sim/configure b/sim/configure
index a839c3a4fb1..6d0cc769283 100755
--- a/sim/configure
+++ b/sim/configure
@@ -16175,6 +16175,7 @@ build_warnings="$build_warnings
 -Wpointer-sign
 -Wreturn-mismatch
 -Wreturn-type
+-Wshift-negative-value
 -Wstrict-prototypes
 -Wno-enum-conversion
 "
diff --git a/sim/m4/sim_ac_option_warnings.m4 b/sim/m4/sim_ac_option_warnings.m4
index 8a54e563bad..7a28ca621a0 100644
--- a/sim/m4/sim_ac_option_warnings.m4
+++ b/sim/m4/sim_ac_option_warnings.m4
@@ -70,6 +70,7 @@ build_warnings="$build_warnings
 -Wpointer-sign
 -Wreturn-mismatch
 -Wreturn-type
+-Wshift-negative-value
 -Wstrict-prototypes
 dnl The cgen virtual insn logic involves enum conversions.
 dnl Disable until we can figure out how to make this work.