diff --git a/src/libstore/daemon.cc b/src/libstore/daemon.cc
index 45bfa6753..0734f990a 100644
--- a/src/libstore/daemon.cc
+++ b/src/libstore/daemon.cc
@@ -711,7 +711,7 @@ static void performOp(TunnelLogger * logger, ref<Store> store,
         {
             string caOptRaw;
             from >> caOptRaw;
-            info.ca = parseCaOpt(caOptRaw);
+            info.ca = parseContentAddressOpt(caOptRaw);
         }
         from >> repair >> dontCheckSigs;
         if (!trusted && dontCheckSigs)
diff --git a/src/libstore/file-hash.cc b/src/libstore/file-hash.cc
index 494079c18..26153a424 100644
--- a/src/libstore/file-hash.cc
+++ b/src/libstore/file-hash.cc
@@ -38,12 +38,12 @@ std::string renderContentAddress(ContentAddress ca) {
     }, ca);
 }
 
-ContentAddress parseCa(std::string_view rawCa) {
+ContentAddress parseContentAddress(std::string_view rawCa) {
     throw Error("TODO");
 };
 
-std::optional<ContentAddress> parseCaOpt(std::string_view rawCaOpt) {
-    return rawCaOpt == "" ? std::optional<ContentAddress> {} : parseCa(rawCaOpt);
+std::optional<ContentAddress> parseContentAddressOpt(std::string_view rawCaOpt) {
+    return rawCaOpt == "" ? std::optional<ContentAddress> {} : parseContentAddress(rawCaOpt);
 };
 
 std::string renderContentAddress(std::optional<ContentAddress> ca) {
diff --git a/src/libstore/file-hash.hh b/src/libstore/file-hash.hh
index 9d12f5fe7..64d514751 100644
--- a/src/libstore/file-hash.hh
+++ b/src/libstore/file-hash.hh
@@ -59,8 +59,8 @@ std::string renderContentAddress(ContentAddress ca);
 
 std::string renderContentAddress(std::optional<ContentAddress> ca);
 
-ContentAddress parseCa(std::string_view rawCa);
+ContentAddress parseContentAddress(std::string_view rawCa);
 
-std::optional<ContentAddress> parseCaOpt(std::string_view rawCaOpt);
+std::optional<ContentAddress> parseContentAddressOpt(std::string_view rawCaOpt);
 
 }
diff --git a/src/libstore/legacy-ssh-store.cc b/src/libstore/legacy-ssh-store.cc
index 8471ed073..9b6e6e6d7 100644
--- a/src/libstore/legacy-ssh-store.cc
+++ b/src/libstore/legacy-ssh-store.cc
@@ -117,7 +117,7 @@ struct LegacySSHStore : public Store
                 {
                     std::string rawCaOpt;
                     conn->from >> rawCaOpt;
-                    info->ca = parseCaOpt(rawCaOpt);
+                    info->ca = parseContentAddressOpt(rawCaOpt);
                 }
                 info->sigs = readStrings<StringSet>(conn->from);
             }
diff --git a/src/libstore/local-store.cc b/src/libstore/local-store.cc
index fe346f96a..2067343c7 100644
--- a/src/libstore/local-store.cc
+++ b/src/libstore/local-store.cc
@@ -662,7 +662,7 @@ void LocalStore::queryPathInfoUncached(const StorePath & path,
             if (s) info->sigs = tokenizeString<StringSet>(s, " ");
 
             s = (const char *) sqlite3_column_text(state->stmtQueryPathInfo, 7);
-            if (s) info->ca = parseCaOpt(s);
+            if (s) info->ca = parseContentAddressOpt(s);
 
             /* Get the references. */
             auto useQueryReferences(state->stmtQueryReferences.use()(info->id));
diff --git a/src/libstore/nar-info-disk-cache.cc b/src/libstore/nar-info-disk-cache.cc
index b4346d4d1..def514840 100644
--- a/src/libstore/nar-info-disk-cache.cc
+++ b/src/libstore/nar-info-disk-cache.cc
@@ -203,7 +203,7 @@ public:
                 narInfo->deriver = StorePath::fromBaseName(queryNAR.getStr(9));
             for (auto & sig : tokenizeString<Strings>(queryNAR.getStr(10), " "))
                 narInfo->sigs.insert(sig);
-            narInfo->ca = parseCaOpt(queryNAR.getStr(11));
+            narInfo->ca = parseContentAddressOpt(queryNAR.getStr(11));
 
             return {oValid, narInfo};
         });
diff --git a/src/libstore/nar-info.cc b/src/libstore/nar-info.cc
index 4f7c732ce..fe37d67ec 100644
--- a/src/libstore/nar-info.cc
+++ b/src/libstore/nar-info.cc
@@ -69,7 +69,7 @@ NarInfo::NarInfo(const Store & store, const std::string & s, const std::string &
         else if (name == "CA") {
             if (ca) corrupt();
             // FIXME: allow blank ca or require skipping field?
-            ca = parseCaOpt(value);
+            ca = parseContentAddressOpt(value);
         }
 
         pos = eol + 1;
diff --git a/src/libstore/remote-store.cc b/src/libstore/remote-store.cc
index 2744245f3..6dab9dc16 100644
--- a/src/libstore/remote-store.cc
+++ b/src/libstore/remote-store.cc
@@ -383,7 +383,7 @@ void RemoteStore::queryPathInfoUncached(const StorePath & path,
                 info->sigs = readStrings<StringSet>(conn->from);
                 string caOptRaw;
                 conn->from >> caOptRaw;
-                info->ca = parseCaOpt(caOptRaw);
+                info->ca = parseContentAddressOpt(caOptRaw);
             }
         }
         callback(std::move(info));
diff --git a/src/nix-store/nix-store.cc b/src/nix-store/nix-store.cc
index 64ee9fd45..5d8d04252 100644
--- a/src/nix-store/nix-store.cc
+++ b/src/nix-store/nix-store.cc
@@ -947,7 +947,7 @@ static void opServe(Strings opFlags, Strings opArgs)
                 {
                     std::string rawCA;
                     in >> rawCA;
-                    info.ca = parseCaOpt(rawCA);
+                    info.ca = parseContentAddressOpt(rawCA);
                 }
 
                 if (info.narSize == 0)