diff --git a/src/lib/formats/wd177x_dsk.cpp b/src/lib/formats/wd177x_dsk.cpp
index 75d76d26f38..fae7bd5f8a6 100644
--- a/src/lib/formats/wd177x_dsk.cpp
+++ b/src/lib/formats/wd177x_dsk.cpp
@@ -460,7 +460,12 @@ void wd177x_format::check_compatibility(floppy_image *image, std::vector<int> &c
 						}
 						ns++;
 					}
-				if(ns != tf.sector_count)
+
+				if(ns > tf.sector_count)
+					goto fail;
+
+				// Be permissive of some missing sectors in later tracks
+				if(ns < tf.sector_count && track < 2)
 					goto fail;
 			}
 		}