diff --git a/SabreTools.Serialization/Wrappers/RAR.Extraction.cs b/SabreTools.Serialization/Wrappers/RAR.Extraction.cs
index f3b21e8e..22754898 100644
--- a/SabreTools.Serialization/Wrappers/RAR.Extraction.cs
+++ b/SabreTools.Serialization/Wrappers/RAR.Extraction.cs
@@ -87,7 +87,10 @@ public bool Extract(string outputDirectory, bool lookForHeader, bool includeDebu
                     }
                 }
 
-                if (isSolid)
+                // Still check SharpCompress's archive-level isSolid flag. Based on the way the check works on their
+                // end, it's possible that a multi-block solid archive might have the second (or more files) file not
+                // solid? It doesn't hurt to check either way.
+                if (isSolid || rarFile.IsSolid)
                     return ExtractSolid(rarFile, outputDirectory, includeDebug);
                 else
                     return ExtractNonSolid(rarFile, outputDirectory, includeDebug);
diff --git a/SabreTools.Serialization/Wrappers/SevenZip.Extraction.cs b/SabreTools.Serialization/Wrappers/SevenZip.Extraction.cs
index 53116b87..345b7023 100644
--- a/SabreTools.Serialization/Wrappers/SevenZip.Extraction.cs
+++ b/SabreTools.Serialization/Wrappers/SevenZip.Extraction.cs
@@ -86,7 +86,10 @@ public bool Extract(string outputDirectory, bool lookForHeader, bool includeDebu
                     }
                 }
                 
-                if (isSolid)
+                // Still check SharpCompress's archive-level isSolid flag. Based on the way the check works on their
+                // end, it's possible that a multi-block solid archive might have the second (or more files) file not
+                // solid? It doesn't hurt to check either way.
+                if (isSolid || sevenZip.IsSolid)
                     return ExtractSolid(sevenZip, outputDirectory, includeDebug);
                 else
                     return ExtractNonSolid(sevenZip, outputDirectory, includeDebug);