diff --git a/regtest/basic/rt-pesmd/Makefile b/regtest/basic/rt-pesmd/Makefile
deleted file mode 100644
index 3703b27cea227aa053fb6d1d73f861e4384dbcee..0000000000000000000000000000000000000000
--- a/regtest/basic/rt-pesmd/Makefile
+++ /dev/null
@@ -1 +0,0 @@
-include ../../scripts/test.make
diff --git a/regtest/basic/rt-pesmd/colv.reference b/regtest/basic/rt-pesmd/colv.reference
deleted file mode 100644
index 72a923f4e5431272ba5f63ca5541653849c36dfc..0000000000000000000000000000000000000000
--- a/regtest/basic/rt-pesmd/colv.reference
+++ /dev/null
@@ -1,52 +0,0 @@
-#! FIELDS time d1.x rr.bias rr.force2
- 0.000000   0.1000   0.0100   0.0400
- 0.005000   0.0993   0.0099   0.0394
- 0.010000   0.0989   0.0098   0.0391
- 0.015000   0.0984   0.0097   0.0387
- 0.020000   0.0986   0.0097   0.0389
- 0.025000   0.0985   0.0097   0.0388
- 0.030000   0.0985   0.0097   0.0388
- 0.035000   0.0981   0.0096   0.0385
- 0.040000   0.0980   0.0096   0.0384
- 0.045000   0.0976   0.0095   0.0381
- 0.050000   0.0965   0.0093   0.0373
- 0.055000   0.0951   0.0091   0.0362
- 0.060000   0.0938   0.0088   0.0352
- 0.065000   0.0916   0.0084   0.0336
- 0.070000   0.0894   0.0080   0.0320
- 0.075000   0.0882   0.0078   0.0311
- 0.080000   0.0877   0.0077   0.0308
- 0.085000   0.0878   0.0077   0.0308
- 0.090000   0.0874   0.0076   0.0306
- 0.095000   0.0868   0.0075   0.0301
- 0.100000   0.0860   0.0074   0.0296
- 0.105000   0.0856   0.0073   0.0293
- 0.110000   0.0847   0.0072   0.0287
- 0.115000   0.0841   0.0071   0.0283
- 0.120000   0.0837   0.0070   0.0280
- 0.125000   0.0828   0.0069   0.0274
- 0.130000   0.0817   0.0067   0.0267
- 0.135000   0.0801   0.0064   0.0256
- 0.140000   0.0777   0.0060   0.0242
- 0.145000   0.0764   0.0058   0.0233
- 0.150000   0.0755   0.0057   0.0228
- 0.155000   0.0743   0.0055   0.0221
- 0.160000   0.0727   0.0053   0.0212
- 0.165000   0.0723   0.0052   0.0209
- 0.170000   0.0717   0.0051   0.0206
- 0.175000   0.0713   0.0051   0.0204
- 0.180000   0.0709   0.0050   0.0201
- 0.185000   0.0713   0.0051   0.0203
- 0.190000   0.0718   0.0052   0.0206
- 0.195000   0.0717   0.0051   0.0206
- 0.200000   0.0719   0.0052   0.0207
- 0.205000   0.0722   0.0052   0.0209
- 0.210000   0.0724   0.0052   0.0210
- 0.215000   0.0726   0.0053   0.0211
- 0.220000   0.0727   0.0053   0.0211
- 0.225000   0.0730   0.0053   0.0213
- 0.230000   0.0738   0.0054   0.0218
- 0.235000   0.0747   0.0056   0.0223
- 0.240000   0.0754   0.0057   0.0227
- 0.245000   0.0767   0.0059   0.0236
- 0.250000   0.0768   0.0059   0.0236
diff --git a/regtest/basic/rt-pesmd/config b/regtest/basic/rt-pesmd/config
deleted file mode 100644
index f65c8c59ba5f92e99416b6591eea47fb66fa7ec6..0000000000000000000000000000000000000000
--- a/regtest/basic/rt-pesmd/config
+++ /dev/null
@@ -1,2 +0,0 @@
-type=plumed
-arg="pesmd input.dat" 
diff --git a/regtest/basic/rt-pesmd/input.dat b/regtest/basic/rt-pesmd/input.dat
deleted file mode 100644
index 2a8df08091964057e0a3899c698dad29b59fc199..0000000000000000000000000000000000000000
--- a/regtest/basic/rt-pesmd/input.dat
+++ /dev/null
@@ -1,7 +0,0 @@
-temperature 0.1
-friction 0.1
-tstep 0.005
-dimension 1
-nstep 50
-ipos 0.1
-periodic false
diff --git a/regtest/basic/rt-pesmd/plumed.dat b/regtest/basic/rt-pesmd/plumed.dat
deleted file mode 100644
index da2d0d818199f54ea4c6da925e77c14cc16b80b6..0000000000000000000000000000000000000000
--- a/regtest/basic/rt-pesmd/plumed.dat
+++ /dev/null
@@ -1,3 +0,0 @@
-d1: DISTANCE ATOMS=1,2 COMPONENTS
-rr: RESTRAINT ARG=d1.x AT=0.0 KAPPA=2 
-PRINT ARG=d1.x,rr.* FILE=colv FMT=%8.4f