diff --git a/ext/featurefmt/apk/apk.go b/ext/featurefmt/apk/apk.go
index 2da9ebc6..f8357ba4 100644
--- a/ext/featurefmt/apk/apk.go
+++ b/ext/featurefmt/apk/apk.go
@@ -66,6 +66,10 @@ func (l lister) ListFeatures(files tarutil.FilesMap) ([]database.FeatureVersion,
 			} else {
 				ipkg.Version = version
 			}
+		case line == "":
+			// Restart if the parser reaches another package definition before
+			// creating a valid package.
+			ipkg = database.FeatureVersion{}
 		}
 
 		// If we have a whole feature, store it in the set and try to parse a new
diff --git a/ext/featurefmt/apk/testdata/installed b/ext/featurefmt/apk/testdata/installed
index 747555d6..712e9465 100644
--- a/ext/featurefmt/apk/testdata/installed
+++ b/ext/featurefmt/apk/testdata/installed
@@ -20,6 +20,8 @@ R:ld-musl-x86_64.so.1
 a:0:0:755
 Z:Q1KUwsFGLHn/enpN9+QIpK/FmixtQ=
 
+P:invalidPackageWithoutAVersion
+
 C:Q1yhJHGSZ80L7cL0y4UKKGrBPwrUQ=
 P:busybox
 V:1.24.2-r9