diff --git a/clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines-macro-usage-custom.cpp b/clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines-macro-usage-custom.cpp
--- a/clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines-macro-usage-custom.cpp
+++ b/clang-tools-extra/test/clang-tidy/checkers/cppcoreguidelines-macro-usage-custom.cpp
@@ -1,9 +1,6 @@
-// FIXME: PR48646
-// UNSUPPORTED: system-windows
-
 // RUN: %check_clang_tidy %s cppcoreguidelines-macro-usage %t \
-// RUN: -config='{CheckOptions: \
-// RUN:  [{key: cppcoreguidelines-macro-usage.AllowedRegexp, value: "DEBUG_*|TEST_*"}]}' --
+// RUN: -config="{CheckOptions: \
+// RUN:  [{key: cppcoreguidelines-macro-usage.AllowedRegexp, value: 'DEBUG_*|TEST_*'}]}" --
 
 #ifndef INCLUDE_GUARD
 #define INCLUDE_GUARD
diff --git a/clang-tools-extra/test/clang-tidy/checkers/readability-identifier-naming-ignored-regexp.cpp b/clang-tools-extra/test/clang-tidy/checkers/readability-identifier-naming-ignored-regexp.cpp
--- a/clang-tools-extra/test/clang-tidy/checkers/readability-identifier-naming-ignored-regexp.cpp
+++ b/clang-tools-extra/test/clang-tidy/checkers/readability-identifier-naming-ignored-regexp.cpp
@@ -1,15 +1,12 @@
-// FIXME: PR48646
-// UNSUPPORTED: system-windows
-
 // RUN: %check_clang_tidy %s readability-identifier-naming %t -- \
-// RUN:   -config='{CheckOptions: [ \
+// RUN:   -config="{CheckOptions: [ \
 // RUN:     {key: readability-identifier-naming.ParameterCase, value: CamelCase}, \
-// RUN:     {key: readability-identifier-naming.ParameterIgnoredRegexp, value: "^[a-z]{1,2}$"}, \
+// RUN:     {key: readability-identifier-naming.ParameterIgnoredRegexp, value: '^[a-z]{1,2}$'}, \
 // RUN:     {key: readability-identifier-naming.ClassCase, value: CamelCase}, \
-// RUN:     {key: readability-identifier-naming.ClassIgnoredRegexp, value: "^fo$|^fooo$"}, \
+// RUN:     {key: readability-identifier-naming.ClassIgnoredRegexp, value: '^fo$|^fooo$'}, \
 // RUN:     {key: readability-identifier-naming.StructCase, value: CamelCase}, \
-// RUN:     {key: readability-identifier-naming.StructIgnoredRegexp, value: "sooo|so|soo|$invalidregex["} \
-// RUN:  ]}'
+// RUN:     {key: readability-identifier-naming.StructIgnoredRegexp, value: 'sooo|so|soo|$invalidregex['} \
+// RUN:  ]}"
 
 int testFunc(int a, char **b);
 int testFunc(int ab, char **ba);