diff --git a/core/constants.py b/core/constants.py
index 2da19b3..0a9788f 100644
--- a/core/constants.py
+++ b/core/constants.py
@@ -4,7 +4,7 @@ from data.sig import SIG
 
 # General software
 SOFTWARE_NAME = "Spothole by M0TRT"
-SOFTWARE_VERSION = "1.1"
+SOFTWARE_VERSION = "1.1.1"
 
 # HTTP headers used for spot providers that use HTTP
 HTTP_HEADERS = {"User-Agent": SOFTWARE_NAME + ", v" + SOFTWARE_VERSION + " (operated by " + SERVER_OWNER_CALLSIGN + ")"}
@@ -36,10 +36,25 @@ SIGS = [
 # Modes. Note "DIGI" and "DIGITAL" are also supported but are normalised into "DATA".
 CW_MODES = ["CW"]
 PHONE_MODES = ["PHONE", "SSB", "USB", "LSB", "AM", "FM", "DV", "DMR", "DSTAR", "C4FM", "M17"]
-DATA_MODES = ["DATA", "FT8", "FT4", "RTTY", "SSTV", "JS8", "HELL", "BPSK", "PSK", "PSK31", "BPSK31", "OLIVIA", "MFSK", "MFSK32", "PKT", "MSK144"]
+DATA_MODES = ["DATA", "FT8", "FT4", "RTTY", "SSTV", "JS8", "HELL", "PSK", "OLIVIA", "PKT", "MSK144"]
 ALL_MODES = CW_MODES + PHONE_MODES + DATA_MODES
 MODE_TYPES = ["CW", "PHONE", "DATA"]
 
+# Mode aliases. Sometimes we get spots with a mode described in a different way that is effectively the same as a mode
+# we already know, or we want to normalise things for consistency. The lookup table for this is here. Incoming spots
+# that match a key in this table will be converted to the corresponding value, so only the modes above will actually be
+# present in the spots.
+MODE_ALIASES = {
+    "RTT": "RTTY",
+    "BPSK": "PSK",
+    "PSK31": "PSK",
+    "BPSK31": "PSK",
+    "MFSK": "FSK",
+    "MFSK32": "FSK",
+    "DIGI": "DATA",
+    "DIGITAL": "DATA"
+}
+
 # Band definitions
 BANDS = [
     Band(name="2200m", start_freq=135700, end_freq=137800),
diff --git a/core/lookup_helper.py b/core/lookup_helper.py
index bc0019f..31bcc72 100644
--- a/core/lookup_helper.py
+++ b/core/lookup_helper.py
@@ -16,7 +16,7 @@ from requests_cache import CachedSession
 from core.cache_utils import SEMI_STATIC_URL_DATA_CACHE
 from core.config import config
 from core.constants import BANDS, UNKNOWN_BAND, CW_MODES, PHONE_MODES, DATA_MODES, ALL_MODES, \
-    HTTP_HEADERS, HAMQTH_PRG
+    HTTP_HEADERS, HAMQTH_PRG, MODE_ALIASES
 
 
 # Singleton class that provides lookup functionality.
@@ -160,6 +160,9 @@ class LookupHelper:
         for mode in ALL_MODES:
             if mode in comment.upper():
                 return mode
+        for mode in MODE_ALIASES.keys():
+            if mode in comment.upper():
+                return MODE_ALIASES[mode]
         return None
 
     # Infer a "mode family" from a mode.
diff --git a/data/spot.py b/data/spot.py
index 21e696d..00de115 100644
--- a/data/spot.py
+++ b/data/spot.py
@@ -10,6 +10,7 @@ import pytz
 from pyhamtools.locator import locator_to_latlong, latlong_to_locator
 
 from core.config import MAX_SPOT_AGE
+from core.constants import MODE_ALIASES
 from core.lookup_helper import lookup_helper
 from core.sig_utils import populate_sig_ref_info, ANY_SIG_REGEX, get_ref_regex_for_sig
 from data.sig_ref import SIGRef
@@ -213,10 +214,9 @@ class Spot:
             self.mode = lookup_helper.infer_mode_from_frequency(self.freq)
             self.mode_source = "BANDPLAN"
 
-        # Normalise "generic digital" modes. "DIGITAL", "DIGI" and "DATA" are just the same thing with no extra
-        # information, so standardise on "DATA"
-        if self.mode == "DIGI" or self.mode == "DIGITAL":
-            self.mode = "DATA"
+        # Normalise mode if necessary.
+        if self.mode in MODE_ALIASES:
+            self.mode = MODE_ALIASES[self.mode]
 
         # Mode type from mode
         if self.mode and not self.mode_type:
diff --git a/webassets/apidocs/openapi.yml b/webassets/apidocs/openapi.yml
index ad9979c..d68a1aa 100644
--- a/webassets/apidocs/openapi.yml
+++ b/webassets/apidocs/openapi.yml
@@ -872,12 +872,9 @@ components:
         - SSTV
         - JS8
         - HELL
-        - BPSK
-        - PSK
-        - BPSK31
         - OLIVIA
-        - MFSK
-        - MFSK32
+        - PSK
+        - FSK
         - PKT
         - MSK144
     example: SSB