diff --git a/c/reg_test/expected/out b/c/reg_test/expected/out
index f7f938139..e3ba3a4c2 100644
--- a/c/reg_test/expected/out
+++ b/c/reg_test/expected/out
@@ -562,6 +562,12 @@ a,b,c
 4,,6
 ,8,9
 
+mlr --csv remove-empty-columns ./reg_test/input/remove-empty-columns.csv
+a,c,e
+1,3,5
+2,4,5
+3,5,7
+
 
 ================================================================
 HEAD/TAIL/ETC.
diff --git a/c/reg_test/input/remove-empty-columns.csv b/c/reg_test/input/remove-empty-columns.csv
new file mode 100644
index 000000000..9c485d345
--- /dev/null
+++ b/c/reg_test/input/remove-empty-columns.csv
@@ -0,0 +1,4 @@
+a,b,c,d,e
+1,,3,,5
+2,,4,,5
+3,,5,,7
diff --git a/c/reg_test/run b/c/reg_test/run
index a635de55b..eed19a865 100755
--- a/c/reg_test/run
+++ b/c/reg_test/run
@@ -235,6 +235,7 @@ run_mlr --opprint unsparsify $indir/abixy
 run_mlr --opprint unsparsify $indir/abixy-het
 
 run_mlr --csv skip-trivial-records $indir/trivial-records.csv
+run_mlr --csv remove-empty-columns $indir/remove-empty-columns.csv
 
 # ----------------------------------------------------------------
 announce HEAD/TAIL/ETC.