diff --git a/utils/fasm2frames.py b/utils/fasm2frames.py
index c9e6c5f0..ef979c25 100755
--- a/utils/fasm2frames.py
+++ b/utils/fasm2frames.py
@@ -186,7 +186,7 @@ def run(
         # unclear how to know which IOSTANDARD to use.
         missing_features = []
         for line in fasm.parse_fasm_string("""
-{tile}.{site}.LVCMOS12_LVCMOS15_LVCMOS18_LVCMOS25_LVCMOS33_LVTTL_SSTL135.IN_ONLY
+{tile}.{site}.LVCMOS12_LVCMOS15_LVCMOS18_LVCMOS25_LVCMOS33_LVTTL_SSTL135_SSTL15.IN_ONLY
 {tile}.{site}.LVCMOS25_LVCMOS33_LVTTL.IN
 {tile}.{site}.PULLTYPE.PULLUP
 """.format(