diff --git a/src/main/java/com/google/api/generator/gapic/composer/utils/PackageChecker.java b/src/main/java/com/google/api/generator/gapic/composer/utils/PackageChecker.java
index 18a50a622e..7911430eb0 100644
--- a/src/main/java/com/google/api/generator/gapic/composer/utils/PackageChecker.java
+++ b/src/main/java/com/google/api/generator/gapic/composer/utils/PackageChecker.java
@@ -43,7 +43,10 @@ public static boolean isGaApi(String pakkage) {
         break;
       }
     }
-    Preconditions.checkState(isFound, "No version component found in package %s", pakkage);
+    if (!isFound) {
+      // No version component is present (applies to APIs like LRO), so treat this as a GA version.
+      return true;
+    }
     String versionSubstr = versionComponent.replace(matcher.group(), "");
     return Strings.isNullOrEmpty(versionSubstr)
         || (!versionSubstr.contains("alpha") && !versionSubstr.contains("beta"));
diff --git a/src/test/java/com/google/api/generator/gapic/composer/utils/PackageCheckerTest.java b/src/test/java/com/google/api/generator/gapic/composer/utils/PackageCheckerTest.java
index 7e514599d3..9cde282e24 100644
--- a/src/test/java/com/google/api/generator/gapic/composer/utils/PackageCheckerTest.java
+++ b/src/test/java/com/google/api/generator/gapic/composer/utils/PackageCheckerTest.java
@@ -16,19 +16,25 @@
 
 import static junit.framework.Assert.assertFalse;
 import static junit.framework.Assert.assertTrue;
-import static org.junit.Assert.assertThrows;
 
 import org.junit.Test;
 
 public class PackageCheckerTest {
   @Test
-  public void isGaApi_normalExpectedPackageStructure() {
+  public void isGaApi_gaVersionPresent() {
     assertTrue(PackageChecker.isGaApi("com.google.cloud.dataproc.v1.services"));
     assertTrue(PackageChecker.isGaApi("com.google.cloud.v1.foobar.services"));
     assertTrue(PackageChecker.isGaApi("com.google.cloud.dataproc.v1"));
     assertTrue(PackageChecker.isGaApi("com.google.cloud.dataproc.v999"));
     assertTrue(PackageChecker.isGaApi("com.google.cloud.dataproc.v12345a"));
     assertTrue(PackageChecker.isGaApi("com.google.cloud.dataproc.v999asdf"));
+    assertTrue(PackageChecker.isGaApi("com.google.cloud.dataproc.v1main"));
+    assertTrue(PackageChecker.isGaApi("com.google.cloud.dataproc"));
+    assertTrue(PackageChecker.isGaApi("com.google.longrunning"));
+  }
+
+  @Test
+  public void isGaApi_alphaBetaVersionPresent() {
     assertFalse(PackageChecker.isGaApi("com.google.cloud.dataproc.v1beta1"));
     assertFalse(PackageChecker.isGaApi("com.google.cloud.dataproc.v1alpha1"));
     assertFalse(PackageChecker.isGaApi("com.google.cloud.dataproc.v1beta"));
@@ -37,12 +43,4 @@ public void isGaApi_normalExpectedPackageStructure() {
     assertFalse(PackageChecker.isGaApi("com.google.cloud.dataproc.v1p4beta"));
     assertFalse(PackageChecker.isGaApi("com.google.cloud.asset.v1beta1"));
   }
-
-  @Test
-  public void isGaApi_invalidPackageStructure() {
-    assertThrows(
-        IllegalStateException.class,
-        () -> PackageChecker.isGaApi("com.google.cloud.dataproc.foo.bar"));
-    assertThrows(IllegalStateException.class, () -> PackageChecker.isGaApi(""));
-  }
 }