diff --git a/test_conformance/math_brute_force/macro_unary_half.cpp b/test_conformance/math_brute_force/macro_unary_half.cpp
index 3d59380206..755b772cd6 100644
--- a/test_conformance/math_brute_force/macro_unary_half.cpp
+++ b/test_conformance/math_brute_force/macro_unary_half.cpp
@@ -103,7 +103,9 @@ int TestMacro_Int_Half(const Func *f, MTdata d, bool relaxedMode)
     }
     else
     {
-        test_info.jobCount = (cl_uint)((1ULL << 32) / test_info.step);
+        test_info.jobCount =
+            std::max((cl_uint)1,
+                     (cl_uint)((1ULL << sizeof(cl_half) * 8) / test_info.step));
     }
 
     test_info.f = f;
diff --git a/test_conformance/math_brute_force/unary_half.cpp b/test_conformance/math_brute_force/unary_half.cpp
index f5de28d0d5..5b0eab4c63 100644
--- a/test_conformance/math_brute_force/unary_half.cpp
+++ b/test_conformance/math_brute_force/unary_half.cpp
@@ -113,7 +113,9 @@ int TestFunc_Half_Half(const Func *f, MTdata d, bool relaxedMode)
     }
     else
     {
-        test_info.jobCount = (cl_uint)((1ULL << 32) / test_info.step);
+        test_info.jobCount =
+            std::max((cl_uint)1,
+                     (cl_uint)((1ULL << sizeof(cl_half) * 8) / test_info.step));
     }
 
     test_info.f = f;