diff --git a/srcpkgs/drawterm/patches/posix_generic.patch b/srcpkgs/drawterm/patches/posix_generic.patch
index e7b774b4c85..aec5c76e018 100644
--- a/srcpkgs/drawterm/patches/posix_generic.patch
+++ b/srcpkgs/drawterm/patches/posix_generic.patch
@@ -92,8 +92,8 @@ index 0000000..289f747
 +int
 +tas(int *x)
 +{
-+	/* Use the GCC builtin __sync_fetch_and_add() for optimal code */
-+	int v = __sync_fetch_and_add(x, 1);
++	/* use a gcc __atomic builtin */
++	int v = __atomic_exchange_n(x, 1, __ATOMIC_SEQ_CST);
 +	switch(v) {
 +	case 0:
 +	case 1:
diff --git a/srcpkgs/drawterm/template b/srcpkgs/drawterm/template
index 40443deec3f..c5e9a3615aa 100644
--- a/srcpkgs/drawterm/template
+++ b/srcpkgs/drawterm/template
@@ -1,7 +1,7 @@
 # Template file for 'drawterm'
 pkgname=drawterm
 version=0.0.20200619
-revision=1
+revision=2
 _hghash=9daaec18b823
 wrksrc=${pkgname}-${_hghash}
 makedepends="libX11-devel libXt-devel"