diff --git a/src/changedFiles.ts b/src/changedFiles.ts
index 70dbcb0a..cc154e78 100644
--- a/src/changedFiles.ts
+++ b/src/changedFiles.ts
@@ -49,7 +49,21 @@ function printPattern(matcher: Minimatch): string {
   return (matcher.negate ? '!' : '') + matcher.pattern;
 }
 
-function isMatch(changedFile: string, matchers: Minimatch[]): boolean {
+function isAnyMatch(changedFile: string, matchers: Minimatch[]): boolean {
+  core.debug(`    matching patterns against file ${changedFile}`);
+  for (const matcher of matchers) {
+    core.debug(`   - ${printPattern(matcher)}`);
+    if (matcher.match(changedFile)) {
+      core.debug(`   ${printPattern(matcher)} matched`);
+      return true;
+    }
+  }
+
+  core.debug(`   no patterns matched`);
+  return false;
+}
+
+function isAllMatch(changedFile: string, matchers: Minimatch[]): boolean {
   core.debug(`    matching patterns against file ${changedFile}`);
   for (const matcher of matchers) {
     core.debug(`   - ${printPattern(matcher)}`);
@@ -70,7 +84,7 @@ export function checkAnyChangedFiles(
   const matchers = globs.map(g => new Minimatch(g));
   core.debug(`  checking "any" patterns`);
   for (const changedFile of changedFiles) {
-    if (isMatch(changedFile, matchers)) {
+    if (isAnyMatch(changedFile, matchers)) {
       core.debug(`  "any" patterns matched against ${changedFile}`);
       return true;
     }
@@ -87,7 +101,7 @@ export function checkAllChangedFiles(
   const matchers = globs.map(g => new Minimatch(g));
   core.debug(` checking "all" patterns`);
   for (const changedFile of changedFiles) {
-    if (!isMatch(changedFile, matchers)) {
+    if (!isAllMatch(changedFile, matchers)) {
       core.debug(`  "all" patterns did not match against ${changedFile}`);
       return false;
     }