diff --git a/src/io/process.hpp b/src/io/process.hpp
index ab8763e..3c55745 100644
--- a/src/io/process.hpp
+++ b/src/io/process.hpp
@@ -102,7 +102,7 @@ class Process: public PostReloadHook {
 	/// If the process is already running changing this property will affect the next
 	/// started process. If the property has been changed after starting a process it will
 	/// return the new value, not the one for the currently running process.
-	Q_PROPERTY(QHash<QString, QVariant> environment READ environment WRITE setEnvironment NOTIFY environmentChanged);
+	Q_PROPERTY(QVariantHash environment READ environment WRITE setEnvironment NOTIFY environmentChanged);
 	/// If the process's environment should be cleared prior to applying @@environment.
 	/// Defaults to false.
 	///
diff --git a/src/io/processcore.hpp b/src/io/processcore.hpp
index 37ec409..8d566c9 100644
--- a/src/io/processcore.hpp
+++ b/src/io/processcore.hpp
@@ -13,7 +13,7 @@ namespace qs::io::process {
 
 class ProcessContext {
 	Q_PROPERTY(QList<QString> command MEMBER command WRITE setCommand);
-	Q_PROPERTY(QHash<QString, QVariant> environment MEMBER environment WRITE setEnvironment);
+	Q_PROPERTY(QVariantHash environment MEMBER environment WRITE setEnvironment);
 	Q_PROPERTY(bool clearEnvironment MEMBER clearEnvironment WRITE setClearEnvironment);
 	Q_PROPERTY(QString workingDirectory MEMBER workingDirectory WRITE setWorkingDirectory);
 	Q_PROPERTY(bool unbindStdout MEMBER unbindStdout WRITE setUnbindStdout);