diff --git a/loki/transformations/inline/mapper.py b/loki/transformations/inline/mapper.py
index 232e38ee6..1ea0e0f8c 100644
--- a/loki/transformations/inline/mapper.py
+++ b/loki/transformations/inline/mapper.py
@@ -58,7 +58,7 @@ def map_procedure_symbol(self, expr, *args, **kwargs):
         return expr.clone(parent=parent)
 
     def map_inline_call(self, expr, *args, **kwargs):
-        if expr.procedure_type is None or expr.procedure_type is BasicType.DEFERRED:
+        if expr.procedure_type in (None, BasicType.DEFERRED) or expr.procedure_type.is_intrinsic:
             # Unkonw inline call, potentially an intrinsic
             # We still need to recurse and ensure re-scoping
             return super().map_inline_call(expr, *args, **kwargs)
diff --git a/loki/transformations/inline/tests/test_functions.py b/loki/transformations/inline/tests/test_functions.py
index 9711f9130..502ad5795 100644
--- a/loki/transformations/inline/tests/test_functions.py
+++ b/loki/transformations/inline/tests/test_functions.py
@@ -253,7 +253,7 @@ def test_inline_statement_functions(frontend, stmt_decls):
     real :: FOEDELTA
     FOEDELTA ( PTARE ) = PTARE + 1.0
     real :: FOEEW
-    FOEEW ( PTARE ) = PTARE + FOEDELTA(PTARE)
+    FOEEW ( PTARE ) = PTARE + FOEDELTA(PTARE) + EXP(PTARE)
     """.strip()
 
     fcode = f"""
@@ -280,10 +280,10 @@ def test_inline_statement_functions(frontend, stmt_decls):
 
     assert not FindNodes(ir.StatementFunction).visit(routine.spec)
     if stmt_decls:
-        assert not FindInlineCalls().visit(routine.body)
+        assert len(FindInlineCalls().visit(routine.body)) == 1
         assignments = FindNodes(ir.Assignment).visit(routine.body)
         assert assignments[0].lhs  == 'ret'
-        assert assignments[0].rhs  ==  "arr + arr + 1.0"
+        assert assignments[0].rhs  ==  "arr + arr + 1.0 + exp(arr)"
         assert assignments[1].lhs  == 'ret2'
         assert assignments[1].rhs  ==  "3.0 + 1.0"
     else: