diff --git a/hls-fix-constexpr.patch b/hls-fix-constexpr.patch
new file mode 100644
index 00000000000..b5272e58cef
--- /dev/null
+++ b/hls-fix-constexpr.patch
@@ -0,0 +1,13 @@
+diff --git a/include/ap_int_base.h b/include/ap_int_base.h
+index 091552a..1d30fea 100644
+--- a/include/ap_int_base.h
++++ b/include/ap_int_base.h
+@@ -122,7 +122,7 @@ struct ap_int_base : public _AP_ROOT_TYPE<_AP_W, _AP_S> {
+    */
+   typedef typename retval<AP_MAX((_AP_W + 7) / 8, 8), _AP_S>::Type RetType;
+ 
+-  static const int width = _AP_W;
++  constexpr static const int width = _AP_W;
+ 
+   template <int _AP_W2, bool _AP_S2>
+   struct RType {
diff --git a/hls.spec b/hls.spec
index e609e8e4c5a..96b854842ee 100644
--- a/hls.spec
+++ b/hls.spec
@@ -5,11 +5,13 @@
 %define runpath_opts -m examples
 Source: git+https://github.com/%{github_user}/HLS_arbitrary_Precision_Types.git?obj=%{branch}/%{tag}&export=%{n}-%{realversion}&output=/%{n}-%{realversion}-%{tag}.tgz
 Patch0: hls-fix-uninitialized
+Patch1: hls-fix-constexpr
 Requires: gmake
 
 %prep
 %setup -n %{n}-%{realversion}
 %patch0 -p1
+%patch1 -p1
 
 %build