diff --git a/firebase_rules_generator/generator.cc b/firebase_rules_generator/generator.cc
index f59e85c..4c81bff 100644
--- a/firebase_rules_generator/generator.cc
+++ b/firebase_rules_generator/generator.cc
@@ -367,7 +367,7 @@ bool RulesGenerator::GenerateField(const protobuf::FieldDescriptor *field,
       case protobuf::FieldDescriptor::TYPE_DOUBLE:
       case protobuf::FieldDescriptor::TYPE_FLOAT:
         // TODO(rockwood): Do we need anything special for "Nan" or "Infinity"?
-        vars.insert({"type", "float"});
+        vars.insert({"type", "number"});
         printer.Print(vars, "resource.$name$ is $type$");
         break;
       case protobuf::FieldDescriptor::TYPE_INT64:
diff --git a/testdata/test4.rules b/testdata/test4.rules
index 1c2ed04..742d260 100644
--- a/testdata/test4.rules
+++ b/testdata/test4.rules
@@ -8,6 +8,6 @@ function isExampleMessage(resource) {
           ((!resource.keys().hasAny(['bar'])) || (resource.bar is map)) &&
           ((!resource.keys().hasAny(['bippity'])) || (resource.bippity is int && resource.bippity >= -2147483648 && resource.bippity <= 2147483647)) &&
           ((!resource.keys().hasAny(['boppity'])) || (resource.boppity is bool)) &&
-          ((!resource.keys().hasAny(['boo'])) || (resource.boo is float));
+          ((!resource.keys().hasAny(['boo'])) || (resource.boo is number));
 }
 // @@END_GENERATED_FUNCTIONS@@