diff --git a/DESCRIPTION b/DESCRIPTION
index d5e329d8..a0bbf691 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -1,6 +1,6 @@
 Package: hubValidations
 Title: Testing framework for hubverse hub validations
-Version: 0.6.1
+Version: 0.6.2
 Authors@R: c(
     person(
         given = "Anna", 
diff --git a/NEWS.md b/NEWS.md
index f96fef1b..037617b8 100644
--- a/NEWS.md
+++ b/NEWS.md
@@ -1,3 +1,7 @@
+# hubValidations 0.6.2
+
+* Fixed bug in `check_tbl_col_types()` where columns in model output data with more than one class were causing an EXEC error (#118). Thanks for the bug report @ruarai!
+
 # hubValidations 0.6.1
 
 * Changed file name header colour in `hub_validations` object `print()` method to make more visible on lighter backgrounds.
diff --git a/R/check_tbl_col_types.R b/R/check_tbl_col_types.R
index ae341a76..8a77ae6d 100644
--- a/R/check_tbl_col_types.R
+++ b/R/check_tbl_col_types.R
@@ -29,7 +29,7 @@ check_tbl_col_types <- function(tbl, file_path, hub_path,
   tbl_types <- purrr::map_chr(tbl, ~ if (inherits(.x, "numeric")) {
     typeof(.x)
   } else {
-    class(.x)
+    paste(class(.x), collapse = "/")
   })
   compare_types <- schema == tbl_types
 
diff --git a/tests/testthat/_snaps/check_tbl_col_types.md b/tests/testthat/_snaps/check_tbl_col_types.md
index ed00e876..2448757b 100644
--- a/tests/testthat/_snaps/check_tbl_col_types.md
+++ b/tests/testthat/_snaps/check_tbl_col_types.md
@@ -25,3 +25,12 @@
       Message:
       Column data types match hub schema.
 
+# check_tbl_col_types on datetimes doesn't cause exec error
+
+    Code
+      check_tbl_col_types(tbl, file_path, hub_path)
+    Output
+      <error/check_failure>
+      Error:
+      ! Column data types do not match hub schema.  `origin_date` should be "Date" not "POSIXct/POSIXt".
+
diff --git a/tests/testthat/test-check_tbl_col_types.R b/tests/testthat/test-check_tbl_col_types.R
index 38a37be1..37ba0a3c 100644
--- a/tests/testthat/test-check_tbl_col_types.R
+++ b/tests/testthat/test-check_tbl_col_types.R
@@ -36,3 +36,15 @@ test_that(
     )
   }
 )
+
+test_that("check_tbl_col_types on datetimes doesn't cause exec error", {
+  hub_path <- system.file("testhubs/simple", package = "hubValidations")
+  file_path <- "team1-goodmodel/2022-10-08-team1-goodmodel.csv"
+  tbl <- read_model_out_file(file_path, hub_path)
+  tbl$origin_date <- as.POSIXct(tbl$origin_date)
+
+  # Should return a check_failure not an exec error
+  expect_snapshot(
+    check_tbl_col_types(tbl, file_path, hub_path)
+  )
+})