diff --git a/compiler-rt/test/sanitizer_common/TestCases/sanitizer_coverage_trace_pc_guard-dso.cpp b/compiler-rt/test/sanitizer_common/TestCases/sanitizer_coverage_trace_pc_guard-dso.cpp
index 9a27bc89a5fae1..f6ccbb6981352b 100644
--- a/compiler-rt/test/sanitizer_common/TestCases/sanitizer_coverage_trace_pc_guard-dso.cpp
+++ b/compiler-rt/test/sanitizer_common/TestCases/sanitizer_coverage_trace_pc_guard-dso.cpp
@@ -1,7 +1,8 @@
 // Tests trace pc guard coverage collection.
 
 // REQUIRES: has_sancovcc
-// UNSUPPORTED: ubsan,target={{(powerpc64|s390x|thumb).*}}
+// Doesn't work on big-endian targets.
+// UNSUPPORTED: ubsan,target={{(powerpc64|s390x|sparc|thumb).*}}
 // XFAIL: tsan,darwin
 // XFAIL: android && asan
 
diff --git a/compiler-rt/test/sanitizer_common/TestCases/sanitizer_coverage_trace_pc_guard.cpp b/compiler-rt/test/sanitizer_common/TestCases/sanitizer_coverage_trace_pc_guard.cpp
index b4b491455c390a..84c28e82f04ac1 100644
--- a/compiler-rt/test/sanitizer_common/TestCases/sanitizer_coverage_trace_pc_guard.cpp
+++ b/compiler-rt/test/sanitizer_common/TestCases/sanitizer_coverage_trace_pc_guard.cpp
@@ -1,7 +1,7 @@
 // Tests trace pc guard coverage collection.
 
 // REQUIRES: has_sancovcc
-// UNSUPPORTED: ubsan,i386-darwin,target={{(powerpc64|s390x|thumb).*}}
+// UNSUPPORTED: ubsan,i386-darwin,target={{(powerpc64|s390x|sparc|thumb).*}}
 // This test is failing for lsan on darwin on x86_64h.
 // UNSUPPORTED: x86_64h-darwin && lsan
 // XFAIL: tsan