diff --git a/test/implicit/2pdfm/test_2pdfm.input b/test/implicit/2pdfm/test_2pdfm.input
index a6cba2aea3995b2759b589bd81a3f6d401400b2d..a64ce39b69fbae0d9ea58540ac009a5424ec8404 100644
--- a/test/implicit/2pdfm/test_2pdfm.input
+++ b/test/implicit/2pdfm/test_2pdfm.input
@@ -10,4 +10,4 @@ EnablePartialReassemble = 1 # enable partial reassembly of the jacobian matrix?
 EnableJacobianRecycling = 1 # enable reuse of jacobian matrices?
 
 [Problem]
- ProblemEnableGravity = 0 # enable gravity
+EnableGravity = 0 # enable gravity?