diff --git a/pgpainless-core/src/main/java/org/pgpainless/decryption_verification/SignatureInputStream.java b/pgpainless-core/src/main/java/org/pgpainless/decryption_verification/SignatureInputStream.java
index 42ca4dc9..275acc17 100644
--- a/pgpainless-core/src/main/java/org/pgpainless/decryption_verification/SignatureInputStream.java
+++ b/pgpainless-core/src/main/java/org/pgpainless/decryption_verification/SignatureInputStream.java
@@ -67,9 +67,7 @@ public abstract class SignatureInputStream extends FilterInputStream {
             final int data = super.read();
             final boolean endOfStream = data == -1;
             if (endOfStream) {
-                parseAndCombineSignatures();
-                verifyOnePassSignatures();
-                verifyDetachedSignatures();
+                finalizeSignatures();
             } else {
                 byte b = (byte) data;
                 updateOnePassSignatures(b);
@@ -84,9 +82,7 @@ public abstract class SignatureInputStream extends FilterInputStream {
 
             final boolean endOfStream = read == -1;
             if (endOfStream) {
-                parseAndCombineSignatures();
-                verifyOnePassSignatures();
-                verifyDetachedSignatures();
+                finalizeSignatures();
             } else {
                 updateOnePassSignatures(b, off, read);
                 updateDetachedSignatures(b, off, read);
@@ -94,6 +90,12 @@ public abstract class SignatureInputStream extends FilterInputStream {
             return read;
         }
 
+        private void finalizeSignatures() {
+            parseAndCombineSignatures();
+            verifyOnePassSignatures();
+            verifyDetachedSignatures();
+        }
+
         public void parseAndCombineSignatures() {
             if (objectFactory == null) {
                 return;