diff --git a/RecoTracker/SpecialSeedGenerators/python/CombinatorialSeedGeneratorForCosmics_cfi.py b/RecoTracker/SpecialSeedGenerators/python/CombinatorialSeedGeneratorForCosmics_cfi.py
index 7615846590095..5a88ebfec64ed 100644
--- a/RecoTracker/SpecialSeedGenerators/python/CombinatorialSeedGeneratorForCosmics_cfi.py
+++ b/RecoTracker/SpecialSeedGenerators/python/CombinatorialSeedGeneratorForCosmics_cfi.py
@@ -109,7 +109,7 @@
     ClusterCollectionLabel = cms.InputTag("siStripClusters"),
     MaxNumberOfStripClusters = cms.uint32(300),
     PixelClusterCollectionLabel = cms.InputTag("siPixelClusters"),
-    MaxNumberOfPixelClusters = cms.uint32(300),
+    MaxNumberOfPixelClusters = cms.uint32(1000),
     requireBOFF = cms.bool(False),
     maxSeeds = cms.int32(10000),
 )
diff --git a/RecoTracker/SpecialSeedGenerators/python/CosmicSeed_cfi.py b/RecoTracker/SpecialSeedGenerators/python/CosmicSeed_cfi.py
index a02f700d15f86..2d5c2202a4925 100644
--- a/RecoTracker/SpecialSeedGenerators/python/CosmicSeed_cfi.py
+++ b/RecoTracker/SpecialSeedGenerators/python/CosmicSeed_cfi.py
@@ -17,7 +17,7 @@
     DontCountDetsAboveNClusters = cms.uint32(20),
     originRadius = cms.double(150.0),
     ClusterCollectionLabel = cms.InputTag("siStripClusters"),
-    MaxNumberOfPixelClusters = cms.uint32(300),
+    MaxNumberOfPixelClusters = cms.uint32(1000),
     PixelClusterCollectionLabel = cms.InputTag("siPixelClusters"),
     originHalfLength = cms.double(90.0),
     #***top-bottom
diff --git a/RecoTracker/SpecialSeedGenerators/python/SimpleCosmicBONSeeder_cfi.py b/RecoTracker/SpecialSeedGenerators/python/SimpleCosmicBONSeeder_cfi.py
index 0139e2cfe4826..7b2cc2093856d 100644
--- a/RecoTracker/SpecialSeedGenerators/python/SimpleCosmicBONSeeder_cfi.py
+++ b/RecoTracker/SpecialSeedGenerators/python/SimpleCosmicBONSeeder_cfi.py
@@ -39,7 +39,7 @@ def makeSimpleCosmicSeedLayers(*layers):
             MaxNumberOfStripClusters = cms.uint32(300),
             ClusterCollectionLabel = cms.InputTag("siStripClusters"),
             DontCountDetsAboveNClusters = cms.uint32(20),  # if N > 0, ignore in total the dets with more than N clusters
-            MaxNumberOfPixelClusters = cms.uint32(300),
+            MaxNumberOfPixelClusters = cms.uint32(1000),
             PixelClusterCollectionLabel = cms.InputTag("siPixelClusters")
     ),
     maxTriplets = cms.int32(50000),