diff --git a/nimbleHMC/tests/testthat/test-tuning.R b/nimbleHMC/tests/testthat/test-tuning.R
index 3d6d5e8..44a833f 100644
--- a/nimbleHMC/tests/testthat/test-tuning.R
+++ b/nimbleHMC/tests/testthat/test-tuning.R
@@ -466,10 +466,10 @@ test_that('burnin/warmup are handled correctly', {
   Cmcmc <- compileNimble(Rmcmc, project = Rmodel)
   
   expect_output(out <- runMCMC(Cmcmc, nburnin = 200, niter = 1000),
-         regex = "using 200 warmup iterations.*all samples returned will be post-warmup")
+         regex = "using 200.*all samples returned will be post-warmup")
 
   expect_output(out <- runMCMC(Cmcmc, niter = 1000),
-         regex = "using 500 warmup iterations.*so the first half of the samples returned.*are from the warmup period")
+         regex = "using 500.*so the first half of the samples returned.*are from the warmup period")
 
   ## 'burnin'
   Rmodel <- nimbleModel(code, constants, data, inits, buildDerivs = TRUE)
@@ -482,7 +482,7 @@ test_that('burnin/warmup are handled correctly', {
   Cmcmc <- compileNimble(Rmcmc, project = Rmodel)
   
   expect_output(out <- runMCMC(Cmcmc, niter = 1000),
-         regex = "using 0 warmup iterations.*No adaptation is being done")
+         regex = "using 0.*No adaptation is being done")
 
   Rmodel <- nimbleModel(code, constants, data, inits, buildDerivs = TRUE)
   Cmodel <- compileNimble(Rmodel)
@@ -494,7 +494,7 @@ test_that('burnin/warmup are handled correctly', {
   Cmcmc <- compileNimble(Rmcmc, project = Rmodel)
   
   expect_output(out <- runMCMC(Cmcmc, nburnin = 200, niter = 1000),
-         regex = "using 200 warmup iterations.*all samples returned will be post-warmup")
+         regex = "using 200.*all samples returned will be post-warmup")
 
   ## 'fraction'
   Rmodel <- nimbleModel(code, constants, data, inits, buildDerivs = TRUE)
@@ -507,7 +507,7 @@ test_that('burnin/warmup are handled correctly', {
   Cmcmc <- compileNimble(Rmcmc, project = Rmodel)
   
   expect_output(out <- runMCMC(Cmcmc, niter = 1000),
-                regex = "using 250 warmup iterations.*some of the samples returned will be collected during the warmup period")
+                regex = "using 250.*some of the samples returned will be collected during the warmup period")
   
   Rmodel <- nimbleModel(code, constants, data, inits, buildDerivs = TRUE)
   Cmodel <- compileNimble(Rmodel)
@@ -519,7 +519,7 @@ test_that('burnin/warmup are handled correctly', {
   Cmcmc <- compileNimble(Rmcmc, project = Rmodel)
   
   expect_output(out <- runMCMC(Cmcmc, nburnin = 100, niter = 1000),
-                regex = "using 250 warmup iterations.*some of the samples returned will be collected during the warmup period")
+                regex = "using 250.*some of the samples returned will be collected during the warmup period")
 
   Rmodel <- nimbleModel(code, constants, data, inits, buildDerivs = TRUE)
   Cmodel <- compileNimble(Rmodel)
@@ -531,7 +531,7 @@ test_that('burnin/warmup are handled correctly', {
   Cmcmc <- compileNimble(Rmcmc, project = Rmodel)
   
   expect_output(out <- runMCMC(Cmcmc, nburnin = 250, niter = 1000),
-                regex = "using 250 warmup iterations.*all samples returned will be post-warmup")
+                regex = "using 250.*all samples returned will be post-warmup")
 
   ## 'iterations'
   Rmodel <- nimbleModel(code, constants, data, inits, buildDerivs = TRUE)
@@ -544,7 +544,7 @@ test_that('burnin/warmup are handled correctly', {
   Cmcmc <- compileNimble(Rmcmc, project = Rmodel)
   
   expect_output(out <- runMCMC(Cmcmc, niter = 1000),
-                regex = "using 500 warmup iterations.*some of the samples returned will be collected during the warmup period")
+                regex = "using 500.*some of the samples returned will be collected during the warmup period")
 
   Rmodel <- nimbleModel(code, constants, data, inits, buildDerivs = TRUE)
   Cmodel <- compileNimble(Rmodel)
@@ -556,7 +556,7 @@ test_that('burnin/warmup are handled correctly', {
   Cmcmc <- compileNimble(Rmcmc, project = Rmodel)
   
   expect_output(out <- runMCMC(Cmcmc, nburnin = 500, niter = 1000),
-                regex = "using 500 warmup iterations.*all samples returned will be post-warmup")
+                regex = "using 500.*all samples returned will be post-warmup")
 
   ## no adaptation
   Rmodel <- nimbleModel(code, constants, data, inits, buildDerivs = TRUE)