diff --git a/src/fmripost_aroma/interfaces/reportlets.py b/src/fmripost_aroma/interfaces/reportlets.py
index 473dab4..4b32f02 100644
--- a/src/fmripost_aroma/interfaces/reportlets.py
+++ b/src/fmripost_aroma/interfaces/reportlets.py
@@ -186,6 +186,16 @@ def _generate_report(self):
 
 
 class _ICAAROMAInputSpecRPT(nrb._SVGReportCapableInputSpec):
+    in_file = File(
+        exists=True,
+        mandatory=True,
+        desc="BOLD series input to ICA-AROMA",
+    )
+    melodic_dir = Directory(
+        exists=True,
+        mandatory=True,
+        desc="MELODIC directory containing the ICA outputs",
+    )
     aroma_noise_ics = File(
         exists=True,
         desc="Noise components estimated by ICA-AROMA, in a comma-separated values file.",
@@ -196,6 +206,8 @@ class _ICAAROMAInputSpecRPT(nrb._SVGReportCapableInputSpec):
         desc="Filename for the visual" " report generated " "by Nipype.",
     )
     report_mask = File(
+        exists=True,
+        mandatory=True,
         desc=(
             "Mask used to draw the outline on the reportlet. "
             "If not set the mask will be derived from the data."