diff --git a/pytential/source.py b/pytential/source.py
index 389cc7cfc..383c722c0 100644
--- a/pytential/source.py
+++ b/pytential/source.py
@@ -188,7 +188,7 @@ def exec_compute_potential_insn(self, actx, insn, bound_expr, evaluate,
                 p2p = self.get_p2p(actx, source_kernels=insn.source_kernels,
                 target_kernels=insn.target_kernels)
 
-            evt, output_for_each_kernel = p2p(actx,
+            output_for_each_kernel = p2p(actx,
                     targets=flatten(target_discr.nodes(), actx, leaf_class=DOFArray),
                     sources=self._nodes,
                     strength=strengths, **kernel_args)
diff --git a/pytential/unregularized.py b/pytential/unregularized.py
index 3dee03372..71b6e2555 100644
--- a/pytential/unregularized.py
+++ b/pytential/unregularized.py
@@ -163,7 +163,7 @@ def exec_compute_potential_insn_direct(self, actx: PyOpenCLArrayContext,
                 p2p = self.get_p2p(actx, source_kernels=insn.source_kernels,
                     target_kernels=insn.target_kernels)
 
-            evt, output_for_each_kernel = p2p(actx,
+            output_for_each_kernel = p2p(actx,
                     targets=flatten(target_discr.nodes(), actx, leaf_class=DOFArray),
                     sources=flatten(
                         self.density_discr.nodes(), actx, leaf_class=DOFArray