diff --git a/tests/Pimd/TEST_FILES b/tests/Pimd/TEST_FILES
index 1c46073073..49d0dcc4ea 100644
--- a/tests/Pimd/TEST_FILES
+++ b/tests/Pimd/TEST_FILES
@@ -13,6 +13,7 @@ he32_only_restart.inp                                 40      2e-14       -7.039
 water-in-helium.inp                                    9      7e-14        1.0713913726284391E-003
 water-in-helium-restart.inp                            9      1e-13        1.0717908679185048E-003
 water-in-helium-lastforce.inp                          9      7e-14        1.0714865845104339E-003
+water-micro-helium.inp                                 9      1e-13        1.0713355696395585E-003
 w512_pint_nose.inp                                     9      8e-14             9.5780711530210407
 w512_pint_gle.inp                                      9      3e-13            -3.5646497002020765
 w512_pint_pile.inp                                     9      3e-12            0.70661010702892924
diff --git a/tests/Pimd/water-micro-helium.inp b/tests/Pimd/water-micro-helium.inp
new file mode 100644
index 0000000000..344dcb30b8
--- /dev/null
+++ b/tests/Pimd/water-micro-helium.inp
@@ -0,0 +1,80 @@
+&GLOBAL
+  PROJECT_NAME               water-micro-helium
+  RUN_TYPE                   PINT
+  PRINT_LEVEL                MEDIUM
+&END GLOBAL
+
+&MOTION
+  &PINT
+    P                        4
+    PROC_PER_REPLICA         1
+    NUM_STEPS                5
+    DT                       0.5
+    NRESPA                   2
+    TEMP                     7.5
+    T_TOL                    0.0
+    TRANSFORMATION           NORMAL
+    &NOSE
+      NNOS                   3
+    &END NOSE
+    &HELIUM
+      PRESAMPLE              T
+      SOLUTE_INTERACTION     MWATER
+      POTENTIAL_FILE_NAME    lj-test-pot.dat
+      NATOMS                 2
+      NBEADS                16
+      NUM_ENV                7
+      INOROT               200
+      IROT                 100
+      BISECTION              8
+      MAX_PERM_CYCLE         1
+      PERIODIC               F
+      DROPLET_RADIUS        15
+      &PRINT
+        &COORDINATES ON
+          &EACH
+            MD               1
+          &END EACH
+        &END COORDINATES
+        &ACTION ON
+          &EACH
+            MD               1
+          &END EACH
+        &END ACTION
+      &END PRINT
+    &END HELIUM
+  &END PINT
+&END MOTION
+
+&FORCE_EVAL
+  METHOD  FIST
+  &MM
+    &POISSON
+      &EWALD
+        GMAX 25
+      &END EWALD
+    &END POISSON
+    &FORCEFIELD
+      PARM_FILE_NAME         ../Fist/sample_pot/water.pot
+      PARMTYPE               CHM
+      &CHARGE
+        ATOM    OT
+        CHARGE -0.8476
+      &END CHARGE
+      &CHARGE
+        ATOM    HT
+        CHARGE  0.4238
+      &END CHARGE
+    &END FORCEFIELD
+  &END MM
+  &SUBSYS
+    &CELL
+      ABC  8.0 8.0 8.0
+      PERIODIC  NONE
+    &END CELL
+    &TOPOLOGY
+      COORD_FILE_NAME        ../Fist/sample_pdb/water_1.pdb
+      COORD_FILE_FORMAT      PDB
+    &END TOPOLOGY
+  &END SUBSYS
+&END FORCE_EVAL