diff --git a/src/lib/flow.js b/src/lib/flow.js
index 81afaf2..4b8d474 100644
--- a/src/lib/flow.js
+++ b/src/lib/flow.js
@@ -7,6 +7,8 @@ import temp from 'temp';
 import {genCheckFlowStatus} from 'flow-annotation-check';
 import {exec, glob, writeFile} from './promisified';
 
+const NO_ANNOTATION_NO_COVERAGE = true; // TODO(dmnd): option or default?
+
 // Load the Array.prototype.find polyfill if needed (e.g. nodejs 0.12).
 /* istanbul ignore if  */
 if (!Array.prototype.find) {
@@ -237,6 +239,12 @@ export async function collectFlowCoverageForFile(
   if (parsedData && !parsedData.error) {
     parsedData.filename = filename;
     parsedData.annotation = await genCheckFlowStatus(flowCommandPath, filename);
+
+    if (parsedData.annotation === 'no flow' && NO_ANNOTATION_NO_COVERAGE) {
+      parsedData.expressions.uncovered_count += parsedData.expressions.covered_count;
+      parsedData.expressions.covered_count = 0;
+    }
+
     return parsedData;
   }