diff --git a/lib/aruba/platforms/unix_platform.rb b/lib/aruba/platforms/unix_platform.rb
index 5e96de868..88414e7fb 100644
--- a/lib/aruba/platforms/unix_platform.rb
+++ b/lib/aruba/platforms/unix_platform.rb
@@ -241,6 +241,10 @@ def which(program, path = ENV["PATH"])
       def builtin_shell_commands
         []
       end
+
+      def term_signal_supported?
+        true
+      end
     end
   end
 end
diff --git a/lib/aruba/platforms/windows_platform.rb b/lib/aruba/platforms/windows_platform.rb
index c6bb35a51..c4c85f268 100644
--- a/lib/aruba/platforms/windows_platform.rb
+++ b/lib/aruba/platforms/windows_platform.rb
@@ -39,6 +39,10 @@ def which(program, path = ENV["PATH"])
       def builtin_shell_commands
         %w(cd dir echo exit set type)
       end
+
+      def term_signal_supported?
+        false
+      end
     end
   end
 end
diff --git a/lib/aruba/processes/spawn_process.rb b/lib/aruba/processes/spawn_process.rb
index e6e064f0c..db807f481 100644
--- a/lib/aruba/processes/spawn_process.rb
+++ b/lib/aruba/processes/spawn_process.rb
@@ -38,8 +38,10 @@ def stdin
       def stop
         return if @exit_status
 
-        send_signal "TERM"
-        return if poll_for_exit(3)
+        if Aruba.platform.term_signal_supported?
+          send_signal "TERM"
+          return if poll_for_exit(3)
+        end
 
         send_signal "KILL"
         wait