diff --git a/DiscImageChef.Filesystems/ChangeLog b/DiscImageChef.Filesystems/ChangeLog
index ac834b3e7..37721dfce 100644
--- a/DiscImageChef.Filesystems/ChangeLog
+++ b/DiscImageChef.Filesystems/ChangeLog
@@ -1,3 +1,8 @@
+2015-12-06  Natalia Portillo  <claunia@claunia.com>
+
+	* SysV.cs:
+	  Solved false positives of UNIX 7th Edition filesystem.
+
 2015-12-06  Natalia Portillo  <claunia@claunia.com>
 
 	* ODS.cs:
diff --git a/DiscImageChef.Filesystems/SysV.cs b/DiscImageChef.Filesystems/SysV.cs
index d90b008d4..4b1ca0b9f 100644
--- a/DiscImageChef.Filesystems/SysV.cs
+++ b/DiscImageChef.Filesystems/SysV.cs
@@ -149,7 +149,7 @@ namespace DiscImageChef.Plugins
                     {
                         if (s_fsize < V7_MAXSIZE && s_nfree < V7_NICFREE && s_ninode < V7_NICINOD)
                         {
-                            if ((s_fsize * 1024) <= (imagePlugin.GetSectors() * imagePlugin.GetSectorSize()) || (s_fsize * 512) <= (imagePlugin.GetSectors() * imagePlugin.GetSectorSize()))
+                            if ((s_fsize * 1024) == (imagePlugin.GetSectors() * imagePlugin.GetSectorSize()) || (s_fsize * 512) == (imagePlugin.GetSectors() * imagePlugin.GetSectorSize()))
                                 return true;
                         }
                     }
@@ -249,7 +249,7 @@ namespace DiscImageChef.Plugins
                     {
                         if (s_fsize < V7_MAXSIZE && s_nfree < V7_NICFREE && s_ninode < V7_NICINOD)
                         {
-                            if ((s_fsize * 1024) <= (imagePlugin.GetSectors() * imagePlugin.GetSectorSize()) || (s_fsize * 512) <= (imagePlugin.GetSectors() * imagePlugin.GetSectorSize()))
+                            if ((s_fsize * 1024) == (imagePlugin.GetSectors() * imagePlugin.GetSectorSize()) || (s_fsize * 512) == (imagePlugin.GetSectors() * imagePlugin.GetSectorSize()))
                             {
                                 sys7th = true;
                                 BigEndianBitConverter.IsLittleEndian = true;