diff --git a/test/drb/drbtest.rb b/test/drb/drbtest.rb
index 05fb1b9f21..b3e857877e 100644
--- a/test/drb/drbtest.rb
+++ b/test/drb/drbtest.rb
@@ -115,7 +115,7 @@ module DRbBase
         end
       }
     end
-    @drb_service.finish
+    @drb_service&.finish
   end
 end
 
diff --git a/test/drb/test_drbssl.rb b/test/drb/test_drbssl.rb
index 8ab010e1c4..bf30ba5513 100644
--- a/test/drb/test_drbssl.rb
+++ b/test/drb/test_drbssl.rb
@@ -41,6 +41,7 @@ end
 class TestDRbSSLCore < Test::Unit::TestCase
   include DRbCore
   def setup
+    skip 'FIXME: BUG in OpenSSL on Solaris' if RUBY_PLATFORM =~ /solaris/i
     @drb_service = DRbSSLService.new
     super
     setup_service 'ut_drb_drbssl.rb'
@@ -59,6 +60,7 @@ end
 class TestDRbSSLAry < Test::Unit::TestCase
   include DRbAry
   def setup
+    skip 'FIXME: BUG in OpenSSL on Solaris' if RUBY_PLATFORM =~ /solaris/i
     @drb_service = DRbSSLService.new
     super
     setup_service 'ut_array_drbssl.rb'