diff --git a/examples/qeq/param.qeq1 b/examples/qeq/param.qeq1
index 9c8514b021..b49705194c 100644
--- a/examples/qeq/param.qeq1
+++ b/examples/qeq/param.qeq1
@@ -1,3 +1,4 @@
+# UNITS: real
 1 5.3200 14.8732 1.0206 0.0 0.0
 2 5.8678 14.0000 0.9000 0.0 0.0
 3 8.5000 17.9978 1.0503 0.0 0.0
diff --git a/examples/qeq/param.qeq2 b/examples/qeq/param.qeq2
index 7e2fdeb8f2..1d77b7d3a6 100644
--- a/examples/qeq/param.qeq2
+++ b/examples/qeq/param.qeq2
@@ -1,2 +1,3 @@
+# UNITS: metal
 1     0.00000         7.25028        0.01   0.772871        0.000000
 2    11.26882        15.37920        0.01   0.243072        0.000000