diff --git a/Code/PgSQL/rdkit/adapter.cpp b/Code/PgSQL/rdkit/adapter.cpp
index 886948e78..f330a5766 100644
--- a/Code/PgSQL/rdkit/adapter.cpp
+++ b/Code/PgSQL/rdkit/adapter.cpp
@@ -53,7 +53,7 @@
 using namespace std;
 using namespace RDKit;
 
-const unsigned int SSS_FP_SIZE=1024;
+const unsigned int SSS_FP_SIZE=2048;
 const unsigned int LAYERED_FP_SIZE=1024;
 const unsigned int MORGAN_FP_SIZE=512;
 const unsigned int HASHED_TORSION_FP_SIZE=1024;