diff --git a/Examples/Tests/collision/inputs_1d b/Examples/Tests/collision/inputs_1d
index 36c48686600..451687d449a 100644
--- a/Examples/Tests/collision/inputs_1d
+++ b/Examples/Tests/collision/inputs_1d
@@ -87,10 +87,10 @@ collision1.species = ions ions
 collision1.CoulombLog = 10.0
 
 # Diagnostics
-diagnostics.diags_names = diags1
+diagnostics.diags_names = diag1
 
-diags1.fields_to_plot = "none"
-diags1.species = "ions"
-diags1.intervals = 600
-diags1.diag_type = Full
-diags1.ions.variables = w z ux uy uz
+diag1.fields_to_plot = "none"
+diag1.species = "ions"
+diag1.intervals = 600
+diag1.diag_type = Full
+diag1.ions.variables = w ux uy uz