diff --git a/test/behavior/math.zig b/test/behavior/math.zig
index 40337d041ad3ea601da2c8175c36e88c848101e4..1c5d2564087f6806fdf23623a420ce1043c8dfae 100644
--- a/test/behavior/math.zig
+++ b/test/behavior/math.zig
@@ -1522,6 +1522,7 @@ test "vector integer addition" {
     if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest; // TODO
     if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest; // TODO
     if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest; // TODO
+    if (builtin.zig_backend == .stage2_c) return error.SkipZigTest; // TODO
 
     const S = struct {
         fn doTheTest() !void {
diff --git a/test/behavior/vector.zig b/test/behavior/vector.zig
index 0dedcc25052f6da7df756de709a3b41fe2c64db1..2b83ad6e005cdf73bd649dd51ebf0c956f6e65d0 100644
--- a/test/behavior/vector.zig
+++ b/test/behavior/vector.zig
@@ -78,6 +78,7 @@ test "vector int operators" {
     if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest; // TODO
     if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest; // TODO
     if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest; // TODO
+    if (builtin.zig_backend == .stage2_c) return error.SkipZigTest; // TODO
 
     const S = struct {
         fn doTheTest() !void {
@@ -177,6 +178,7 @@ test "tuple to vector" {
     if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest; // TODO
     if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest; // TODO
     if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest; // TODO
+    if (builtin.zig_backend == .stage2_c) return error.SkipZigTest; // TODO
 
     if ((builtin.zig_backend == .stage1 or builtin.zig_backend == .stage2_llvm) and
         builtin.cpu.arch == .aarch64)
@@ -943,6 +945,7 @@ test "multiplication-assignment operator with an array operand" {
     if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest; // TODO
     if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest; // TODO
     if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest; // TODO
+    if (builtin.zig_backend == .stage2_c) return error.SkipZigTest; // TODO
 
     const S = struct {
         fn doTheTest() !void {