diff --git a/CHANGES b/CHANGES
index 16206ce34a..38eaac19b0 100644
--- a/CHANGES
+++ b/CHANGES
@@ -1,3 +1,7 @@
+3.3.0-dev.188 | 2020-08-24 14:30:43 -0700
+
+  * GH-710: Check that &expire_func is a function and not hook/event (Jon Siwek, Corelight)
+
 3.3.0-dev.186 | 2020-08-24 14:28:25 -0700
 
   * Fix a case where PktSrc gets processed twice in one runloop iteration
diff --git a/VERSION b/VERSION
index afc0f332ed..e18970d8ff 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-3.3.0-dev.186
+3.3.0-dev.188
diff --git a/src/Attr.cc b/src/Attr.cc
index 8f6b54a13c..537c04a24f 100644
--- a/src/Attr.cc
+++ b/src/Attr.cc
@@ -512,10 +512,19 @@ void Attributes::CheckAttr(Attr* a)
 		const auto& expire_func = a->GetExpr();
 
 		if ( expire_func->GetType()->Tag() != TYPE_FUNC )
+			{
 			Error("&expire_func attribute is not a function");
+			break;
+			}
 
 		const FuncType* e_ft = expire_func->GetType()->AsFuncType();
 
+		if ( e_ft->Flavor() != FUNC_FLAVOR_FUNCTION )
+			{
+			Error("&expire_func attribute is not a function");
+			break;
+			}
+
 		if ( e_ft->Yield()->Tag() != TYPE_INTERVAL )
 			{
 			Error("&expire_func must yield a value of type interval");
diff --git a/testing/btest/Baseline/language.expire-func-type-check/output b/testing/btest/Baseline/language.expire-func-type-check/output
new file mode 100644
index 0000000000..a1beba1f27
--- /dev/null
+++ b/testing/btest/Baseline/language.expire-func-type-check/output
@@ -0,0 +1,3 @@
+error in /home/jon/pro/zeek/zeek/testing/btest/.tmp/language.expire-func-type-check/expire-func-type-check.zeek, line 12: &expire_func attribute is not a function (&expire_func=myev)
+error in /home/jon/pro/zeek/zeek/testing/btest/.tmp/language.expire-func-type-check/expire-func-type-check.zeek, line 13: &expire_func attribute is not a function (&expire_func=myhk)
+error in /home/jon/pro/zeek/zeek/testing/btest/.tmp/language.expire-func-type-check/expire-func-type-check.zeek, line 14: &expire_func attribute is not a function (&expire_func=foo)
diff --git a/testing/btest/language/expire-func-type-check.zeek b/testing/btest/language/expire-func-type-check.zeek
new file mode 100644
index 0000000000..a6126806f2
--- /dev/null
+++ b/testing/btest/language/expire-func-type-check.zeek
@@ -0,0 +1,14 @@
+# @TEST-EXEC-FAIL: zeek -b %INPUT >output 2>&1
+# @TEST-EXEC: TEST_DIFF_CANONIFIER=$SCRIPTS/diff-remove-abspath btest-diff output
+
+event myev(t: table[string] of count)
+	{ }
+
+hook myhk(t: table[string] of count)
+	{ }
+
+global foo = 3;
+
+global t: table[string] of count &expire_func=myev;
+global tt: table[string] of count &expire_func=myhk;
+global ttt: table[string] of count &expire_func=foo;