diff --git a/src/olympic/applib/applib.cpp b/src/olympic/applib/applib.cpp
index 142a5380..3bb02107 100644
--- a/src/olympic/applib/applib.cpp
+++ b/src/olympic/applib/applib.cpp
@@ -45,7 +45,7 @@ ox::Error run(
 		ox::StringView project,
 		ox::StringView appName,
 		ox::StringView projectDataDir,
-		ox::SpanView<char const*> argv) noexcept;
+		ox::SpanView<ox::CString> argv) noexcept;
 
 namespace OLYMPIC_PROJECT_NAMESPACE {
 void registerKeelModules() noexcept;
diff --git a/src/olympic/keel/src/pack-applib.cpp b/src/olympic/keel/src/pack-applib.cpp
index d963382c..b869871b 100644
--- a/src/olympic/keel/src/pack-applib.cpp
+++ b/src/olympic/keel/src/pack-applib.cpp
@@ -101,6 +101,6 @@ ox::Error run(
 		[[maybe_unused]] ox::StringView project,
 		[[maybe_unused]] ox::StringView appName,
 		ox::StringView projectDataDir,
-		ox::SpanView<char const*> argv) noexcept {
+		ox::SpanView<ox::CString> argv) noexcept {
 	return ::run(argv, projectDataDir);
 }
diff --git a/src/olympic/studio/applib/src/main.cpp b/src/olympic/studio/applib/src/main.cpp
index 3f5c1060..8479d824 100644
--- a/src/olympic/studio/applib/src/main.cpp
+++ b/src/olympic/studio/applib/src/main.cpp
@@ -71,6 +71,6 @@ ox::Error run(
 		ox::StringView project,
 		ox::StringView appName,
 		ox::StringView projectDataDir,
-		ox::SpanView<char const*> args) noexcept {
+		ox::SpanView<ox::CString> args) noexcept {
 	return studio::run(ox::sfmt("{} {}", project, appName), projectDataDir, args);
 }