diff --git a/.github/workflows/compilers.yml b/.github/workflows/compilers.yml
index 0e19b0b5c7..f3a872de8f 100644
--- a/.github/workflows/compilers.yml
+++ b/.github/workflows/compilers.yml
@@ -156,8 +156,8 @@ jobs:
 #         - { key: cppflags, name: USE_THREAD_CACHE=0,             value: '-DUSE_THREAD_CACHE=0' }
 #         - { key: cppflags, name: USE_TRANSIENT_HEAP=0,           value: '-DUSE_TRANSIENT_HEAP=0' }
 #         - { key: cppflags, name: USE_RUBY_DEBUG_LOG=1,           value: '-DUSE_RUBY_DEBUG_LOG=1' }
-#         - { key: cppflags, name: USE_RVARGC=0,                   value: '-DUSE_RVARGC=0' }
-          - { key: cppflags, name: USE_RVARGC=1,                   value: '-DUSE_RVARGC=1' }
+          - { key: cppflags, name: USE_RVARGC=0,                   value: '-DUSE_RVARGC=0' }
+#         - { key: cppflags, name: USE_RVARGC=1,                   value: '-DUSE_RVARGC=1' }
 
           - { key: cppflags, name: DEBUG_FIND_TIME_NUMGUESS,       value: '-DDEBUG_FIND_TIME_NUMGUESS' }
           - { key: cppflags, name: DEBUG_INTEGER_PACK,             value: '-DDEBUG_INTEGER_PACK' }