diff --git a/src/tint/lang/core/constant/composite_test.cc b/src/tint/lang/core/constant/composite_test.cc
index 1e0e550..f03f323 100644
--- a/src/tint/lang/core/constant/composite_test.cc
+++ b/src/tint/lang/core/constant/composite_test.cc
@@ -47,8 +47,8 @@
     auto* fPos1 = constants.Get(1_f);
     auto* fNeg1 = constants.Get(-1_f);
 
-    auto* compositePosZeros = constants.Composite(vec3f, Vector{fPos0, fPos0});
-    auto* compositeNegZeros = constants.Composite(vec3f, Vector{fNeg0, fNeg0});
+    auto* compositePosZeros = constants.Composite(vec3f, Vector{fPos0, fPos0, fPos0});
+    auto* compositeNegZeros = constants.Composite(vec3f, Vector{fNeg0, fNeg0, fNeg0});
     auto* compositeMixed = constants.Composite(vec3f, Vector{fNeg0, fPos1, fPos0});
     auto* compositePosNeg = constants.Composite(vec3f, Vector{fNeg1, fPos1, fPos1});
 
@@ -66,8 +66,8 @@
     auto* fPos1 = constants.Get(1_f);
     auto* fNeg1 = constants.Get(-1_f);
 
-    auto* compositePosZeros = constants.Composite(vec3f, Vector{fPos0, fPos0});
-    auto* compositeNegZeros = constants.Composite(vec3f, Vector{fNeg0, fNeg0});
+    auto* compositePosZeros = constants.Composite(vec3f, Vector{fPos0, fPos0, fPos0});
+    auto* compositeNegZeros = constants.Composite(vec3f, Vector{fNeg0, fNeg0, fNeg0});
     auto* compositeMixed = constants.Composite(vec3f, Vector{fNeg0, fPos1, fPos0});
     auto* compositePosNeg = constants.Composite(vec3f, Vector{fNeg1, fPos1, fPos1});
 
@@ -78,12 +78,12 @@
 }
 
 TEST_F(ConstantTest_Composite, Index) {
-    auto* vec3f = create<core::type::Vector>(create<core::type::F32>(), 3u);
+    auto* vec2f = create<core::type::Vector>(create<core::type::F32>(), 2u);
 
     auto* fPos0 = constants.Get(0_f);
     auto* fPos1 = constants.Get(1_f);
 
-    auto* composite = constants.Composite(vec3f, Vector{fPos1, fPos0});
+    auto* composite = constants.Composite(vec2f, Vector{fPos1, fPos0});
 
     ASSERT_NE(composite->Index(0), nullptr);
     ASSERT_NE(composite->Index(1), nullptr);
@@ -96,12 +96,12 @@
 }
 
 TEST_F(ConstantTest_Composite, Clone) {
-    auto* vec3f = create<core::type::Vector>(create<core::type::F32>(), 3u);
+    auto* vec2f = create<core::type::Vector>(create<core::type::F32>(), 2u);
 
     auto* fPos0 = constants.Get(0_f);
     auto* fPos1 = constants.Get(1_f);
 
-    auto* composite = constants.Composite(vec3f, Vector{fPos1, fPos0});
+    auto* composite = constants.Composite(vec2f, Vector{fPos1, fPos0});
 
     constant::Manager mgr;
     constant::CloneContext ctx{core::type::CloneContext{{nullptr}, {nullptr, &mgr.types}}, mgr};
diff --git a/src/tint/lang/core/constant/eval_runtime_semantics_test.cc b/src/tint/lang/core/constant/eval_runtime_semantics_test.cc
index 95798e9..d48c8c9 100644
--- a/src/tint/lang/core/constant/eval_runtime_semantics_test.cc
+++ b/src/tint/lang/core/constant/eval_runtime_semantics_test.cc
@@ -479,8 +479,9 @@
 }
 
 TEST_F(ConstEvalRuntimeSemanticsTest, Unpack2x16Float_OutOfRange) {
+    auto* vec2f = create<core::type::Vector>(create<core::type::F32>(), 2u);
     auto* a = constants.Get(u32(0x51437C00));
-    auto result = eval.unpack2x16float(create<core::type::U32>(), Vector{a}, {});
+    auto result = eval.unpack2x16float(vec2f, Vector{a}, {});
     ASSERT_EQ(result, Success);
     EXPECT_FLOAT_EQ(result.Get()->Index(0)->ValueAs<f32>(), 0.f);
     EXPECT_FLOAT_EQ(result.Get()->Index(1)->ValueAs<f32>(), 42.09375f);