diff --git a/model/src/main/kotlin/Provenance.kt b/model/src/main/kotlin/Provenance.kt
index cdea2aa391201..f0d2a535e7885 100644
--- a/model/src/main/kotlin/Provenance.kt
+++ b/model/src/main/kotlin/Provenance.kt
@@ -76,7 +76,9 @@ data class RepositoryProvenance(
     val resolvedRevision: String
 ) : KnownProvenance {
     init {
-        require(resolvedRevision.isNotBlank()) { "The resolved revision must not be blank." }
+        require(vcsInfo == VcsInfo.EMPTY || resolvedRevision.isNotBlank()) {
+            "The resolved revision must not be blank."
+        }
     }
 
     /**
diff --git a/model/src/test/kotlin/OrtResultTest.kt b/model/src/test/kotlin/OrtResultTest.kt
index c5065a38cd65a..a514d4e351908 100644
--- a/model/src/test/kotlin/OrtResultTest.kt
+++ b/model/src/test/kotlin/OrtResultTest.kt
@@ -83,9 +83,9 @@ class OrtResultTest : WordSpec({
 
     "getDefinitionFilePathRelativeToAnalyzerRoot()" should {
         "use the correct vcs" {
-            val vcs = VcsInfo(type = VcsType.GIT, url = "https://example.com/git", revision = "")
-            val nestedVcs1 = VcsInfo(type = VcsType.GIT, url = "https://example.com/git1", revision = "")
-            val nestedVcs2 = VcsInfo(type = VcsType.GIT, url = "https://example.com/git2", revision = "")
+            val vcs = VcsInfo(type = VcsType.GIT, url = "https://example.com/git", revision = "main")
+            val nestedVcs1 = VcsInfo(type = VcsType.GIT, url = "https://example.com/git1", revision = "main")
+            val nestedVcs2 = VcsInfo(type = VcsType.GIT, url = "https://example.com/git2", revision = "main")
             val project1 = Project.EMPTY.copy(
                 id = Identifier("Gradle:org.ossreviewtoolkit:project1:1.0"),
                 definitionFilePath = "project1/build.gradle",
@@ -123,9 +123,9 @@ class OrtResultTest : WordSpec({
         }
 
         "fail if no vcs matches" {
-            val vcs = VcsInfo(type = VcsType.GIT, url = "https://example.com/git", revision = "")
-            val nestedVcs1 = VcsInfo(type = VcsType.GIT, url = "https://example.com/git1", revision = "")
-            val nestedVcs2 = VcsInfo(type = VcsType.GIT, url = "https://example.com/git2", revision = "")
+            val vcs = VcsInfo(type = VcsType.GIT, url = "https://example.com/git", revision = "main")
+            val nestedVcs1 = VcsInfo(type = VcsType.GIT, url = "https://example.com/git1", revision = "main")
+            val nestedVcs2 = VcsInfo(type = VcsType.GIT, url = "https://example.com/git2", revision = "main")
             val project = Project.EMPTY.copy(
                 id = Identifier("Gradle:org.ossreviewtoolkit:project1:1.0"),
                 definitionFilePath = "build.gradle",