diff --git a/testmaps/qbsp_q1_0125unit_faces.map b/testmaps/qbsp_q1_0125unit_faces.map
new file mode 100644
index 00000000..ec5cc677
--- /dev/null
+++ b/testmaps/qbsp_q1_0125unit_faces.map
@@ -0,0 +1,55 @@
+// Game: Quake
+// Format: Valve
+// entity 0
+{
+"mapversion" "220"
+"classname" "worldspawn"
+"wad" "deprecated/free_wad.wad;deprecated/hintskip.wad"
+// brush 0
+{
+( -64 -64 -16 ) ( -64 -63 -16 ) ( -64 -64 -15 ) skip [ 0 -1 0 0 ] [ 0 0 -1 0 ] 0 1 1
+( -64 -64 -16 ) ( -64 -64 -15 ) ( -63 -64 -16 ) skip [ 1 0 0 0 ] [ 0 0 -1 0 ] 0 1 1
+( -64 -64 -16 ) ( -63 -64 -16 ) ( -64 -63 -16 ) skip [ -1 0 0 0 ] [ 0 -1 0 0 ] 0 1 1
+( 64 64 16 ) ( 64 65 16 ) ( 65 64 16 ) skip [ 1 0 0 0 ] [ 0 -1 0 0 ] 0 1 1
+( 64 64 16 ) ( 65 64 16 ) ( 64 64 17 ) skip [ -1 0 0 0 ] [ 0 0 -1 0 ] 0 1 1
+( 64 64 16 ) ( 64 64 17 ) ( 64 65 16 ) skip [ 0 1 0 0 ] [ 0 0 -1 0 ] 0 1 1
+}
+// brush 1
+{
+( 32 -64 16 ) ( 32 -63 16 ) ( 32 -64 17 ) bolt18 [ 0 -1 0 0 ] [ 0 0 -1 0 ] 0 1 1
+( 32 -64 16 ) ( 32 -64 17 ) ( 33 -64 16 ) skip [ 1 0 0 0 ] [ 0 0 -1 0 ] 0 1 1
+( 32 -64 16 ) ( 33 -64 16 ) ( 32 -63 16 ) skip [ -1 0 0 0 ] [ 0 -1 0 0 ] 0 1 1
+( 64 -48 112 ) ( 64 -47 112 ) ( 65 -48 112 ) skip [ 1 0 0 0 ] [ 0 -1 0 0 ] 0 1 1
+( 64 -48 32 ) ( 65 -48 32 ) ( 64 -48 33 ) skip [ -1 0 0 0 ] [ 0 0 -1 0 ] 0 1 1
+( 64 -48 32 ) ( 64 -48 33 ) ( 64 -47 32 ) skip [ 0 1 0 0 ] [ 0 0 -1 0 ] 0 1 1
+}
+// brush 2
+{
+( -64 -64 16 ) ( -64 -63 16 ) ( -64 -64 17 ) skip [ 0 -1 0 0 ] [ 0 0 -1 0 ] 0 1 1
+( 0 -64 16 ) ( 0 -64 17 ) ( 1 -64 16 ) skip [ 1 0 0 0 ] [ 0 0 -1 0 ] 0 1 1
+( 0 -64 80 ) ( 1 -64 80 ) ( 0 -63 80 ) bolt18 [ 0 -1.0000000000000002 0 0 ] [ 1.0000000000000002 0 0 -48 ] 0 1 1
+( 32 -48 112 ) ( 32 -47 112 ) ( 33 -48 112 ) skip [ 1 0 0 0 ] [ 0 -1 0 0 ] 0 1 1
+( 32 -48 32 ) ( 33 -48 32 ) ( 32 -48 33 ) skip [ -1 0 0 0 ] [ 0 0 -1 0 ] 0 1 1
+( 32 -48 32 ) ( 32 -48 33 ) ( 32 -47 32 ) skip [ 0 1 0 0 ] [ 0 0 -1 0 ] 0 1 1
+}
+// brush 3
+{
+( -64 -48.25 80 ) ( -64 -64 80 ) ( -64 -64 16 ) skip [ 0 -1 0 0 ] [ 0 0 -1 0 ] 0 1 1
+( 32 -48.125 16 ) ( 32 -48.125 80 ) ( -64 -48.25 80 ) skip [ -1 0 0 0 ] [ 0 0 -1 0 ] 0 1 1
+( -64 -64 80 ) ( 32 -64 80 ) ( 32 -64 16 ) skip [ 1 0 0 0 ] [ 0 0 -1 0 ] 0 1 1
+( 32 -64 16 ) ( 32 -48.125 16 ) ( -64 -48.25 16 ) skip [ -1 0 0 0 ] [ 0 -1 0 0 ] 0 1 1
+( -64 -48.25 80 ) ( 32 -48.125 80 ) ( 32 -64 80 ) skip [ 1 0 0 0 ] [ 0 -1 0 0 ] 0 1 1
+( 32 -64 80 ) ( 32 -48.125 80 ) ( 32 -48.125 16 ) skip [ 0 1 0 0 ] [ 0 0 -1 0 ] 0 1 1
+}
+}
+// entity 1
+{
+"classname" "info_player_start"
+"origin" "16 40 40"
+"angle" "270"
+}
+// entity 2
+{
+"classname" "light"
+"origin" "8 0 88"
+}
diff --git a/tests/test_qbsp.cc b/tests/test_qbsp.cc
index 986b1d75..e0c7502d 100644
--- a/tests/test_qbsp.cc
+++ b/tests/test_qbsp.cc
@@ -1258,6 +1258,14 @@ TEST_CASE("qbsp_sealing_point_entity_on_outside", "[testmaps_q1]") {
     REQUIRE(prt.has_value());
 }
 
+TEST_CASE("qbsp_q1_0125unit_faces", "[testmaps_q1][!mayfail]")
+{
+    const auto [bsp, bspx, prt] = LoadTestmapQ1("qbsp_q1_0125unit_faces.map");
+
+    CHECK(bsp.loadversion == &bspver_q1);
+    CHECK(2 == bsp.dfaces.size());
+}
+
 // q2 testmaps
 
 TEST_CASE("detail", "[testmaps_q2]") {
@@ -1545,7 +1553,7 @@ TEST_CASE("quake maps", "[testmaps_q1][.releaseonly]")
     }
 }
 
-TEST_CASE("chop", "[testmaps_q1]")
+TEST_CASE("chop", "[testmaps_q1][.releaseonly]")
 {
     const auto [bsp, bspx, prt] = LoadTestmapQ1("quake_map_source/DM1-test.map", {"-chop", "-debugchop"});