diff --git a/flang/lib/Semantics/check-declarations.cpp b/flang/lib/Semantics/check-declarations.cpp
--- a/flang/lib/Semantics/check-declarations.cpp
+++ b/flang/lib/Semantics/check-declarations.cpp
@@ -88,6 +88,7 @@
   void CheckGenericOps(const Scope &);
   bool CheckConflicting(const Symbol &, Attr, Attr);
   void WarnMissingFinal(const Symbol &);
+  void CheckSymbolType(const Symbol &); // C702
   bool InPure() const {
     return innermostSymbol_ && IsPureProcedure(*innermostSymbol_);
   }
@@ -494,15 +495,7 @@
 
 void CheckHelper::CheckObjectEntity(
     const Symbol &symbol, const ObjectEntityDetails &details) {
-  if (!IsAllocatableOrPointer(symbol)) { // C702
-    if (auto dyType{evaluate::DynamicType::From(symbol)}) {
-      if (dyType->HasDeferredTypeParameter()) {
-        messages_.Say(
-            "'%s' has a type %s with a deferred type parameter but is neither an allocatable or a pointer"_err_en_US,
-            symbol.name(), dyType->AsFortran());
-      }
-    }
-  }
+  CheckSymbolType(symbol);
   CheckArraySpec(symbol, details.shape());
   Check(details.shape());
   Check(details.coshape());
@@ -801,6 +794,7 @@
 
 void CheckHelper::CheckProcEntity(
     const Symbol &symbol, const ProcEntityDetails &details) {
+  CheckSymbolType(symbol);
   if (details.isDummy()) {
     if (!symbol.attrs().test(Attr::POINTER) && // C843
         (symbol.attrs().test(Attr::INTENT_IN) ||
@@ -2337,6 +2331,18 @@
   }
 }
 
+void CheckHelper::CheckSymbolType(const Symbol &symbol) {
+  if (!IsAllocatableOrPointer(symbol)) { // C702
+    if (auto dyType{evaluate::DynamicType::From(symbol)}) {
+      if (dyType->HasDeferredTypeParameter()) {
+        messages_.Say(
+            "'%s' has a type %s with a deferred type parameter but is neither an allocatable or a pointer"_err_en_US,
+            symbol.name(), dyType->AsFortran());
+      }
+    }
+  }
+}
+
 void SubprogramMatchHelper::Check(
     const Symbol &symbol1, const Symbol &symbol2) {
   const auto details1{symbol1.get<SubprogramDetails>()};
diff --git a/flang/test/Semantics/resolve69.f90 b/flang/test/Semantics/resolve69.f90
--- a/flang/test/Semantics/resolve69.f90
+++ b/flang/test/Semantics/resolve69.f90
@@ -26,6 +26,16 @@
   character(:) :: colonString2
   !OK because of the allocatable attribute
   character(:), allocatable :: colonString3
+!ERROR: 'foo1' has a type CHARACTER(KIND=1,LEN=:) with a deferred type parameter but is neither an allocatable or a pointer
+  character(:), external :: foo1
+!ERROR: 'foo2' has a type CHARACTER(KIND=1,LEN=:) with a deferred type parameter but is neither an allocatable or a pointer
+  procedure(character(:)) :: foo2
+  interface
+    function foo3()
+!ERROR: 'foo3' has a type CHARACTER(KIND=1,LEN=:) with a deferred type parameter but is neither an allocatable or a pointer
+      character(:) foo3
+    end function
+  end interface
 
 !ERROR: Must have INTEGER type, but is REAL(4)
   character(3.5) :: badParamValue
@@ -75,6 +85,8 @@
   implicit character(:)(f)
 end function
 
+!Not errors.
+
 Program d5
   Type string(maxlen)
     Integer,Kind :: maxlen
@@ -85,7 +97,6 @@
   Print *,Trim(line%value)
 End Program
 
-!Not errors.
 subroutine outer
   integer n
  contains