diff --git a/DataSpec/DNACommon/WPSC.cpp b/DataSpec/DNACommon/WPSC.cpp
index 02a0b4bfe..d3726cb15 100644
--- a/DataSpec/DNACommon/WPSC.cpp
+++ b/DataSpec/DNACommon/WPSC.cpp
@@ -113,7 +113,7 @@ void WPSM<IDType>::_read(athena::io::YAMLDocReader& r) {
         xunk_FC60.read(r);
         break;
       case SBIG('SPS1'):
-        xunk_SPS2.read(r);
+        xunk_SPS1.read(r);
         break;
       case SBIG('SPS2'):
         xunk_SPS2.read(r);