diff --git a/globals/prefixes.go b/globals/prefixes.go
index 4abaea5bbd..0316ba71c7 100644
--- a/globals/prefixes.go
+++ b/globals/prefixes.go
@@ -311,7 +311,11 @@ var resourceTypeToPrefixes map[resource.Type][]string = func() map[resource.Type
 func ResourceInfoFromPrefix(in string) ResourceInfo {
 	// If full ID, trim to just prefix
 	in, _, _ = strings.Cut(in, "_")
-	return prefixToResourceType[in]
+	res, ok := prefixToResourceType[in]
+	if !ok {
+		return ResourceInfo{Type: resource.Unknown}
+	}
+	return res
 }
 
 // ResourcePrefixesFromType returns the known prefixes for a given type; if a
diff --git a/globals/prefixes_test.go b/globals/prefixes_test.go
index 9c56287366..2b5e08db8a 100644
--- a/globals/prefixes_test.go
+++ b/globals/prefixes_test.go
@@ -20,9 +20,10 @@ func TestResourceInfoFromPrefix(t *testing.T) {
 		JsonCredentialPrefix:         resource.Credential,
 	}
 
+	assert.Equal(t, resource.Unknown, ResourceInfoFromPrefix("foobar").Type)
 	for prefix, typ := range vals {
 		assert.Equal(t, typ, ResourceInfoFromPrefix(prefix).Type)
 		assert.Equal(t, typ, ResourceInfoFromPrefix(fmt.Sprintf("%s_foobar", prefix)).Type)
-		assert.Equal(t, resource.Unknown, ResourceInfoFromPrefix(fmt.Sprintf("%sfoobar", prefix)))
+		assert.Equal(t, resource.Unknown, ResourceInfoFromPrefix(fmt.Sprintf("%sfoobar", prefix)).Type)
 	}
 }