2 files changed, 2 insertions, 2 deletions
diff --git a/engines/sherlock/journal.cpp b/engines/sherlock/journal.cpp
index 3312422b92..a30734c4f5 100644
--- a/engines/sherlock/journal.cpp
+++ b/engines/sherlock/journal.cpp
@@ -706,7 +706,7 @@ void Journal::loadJournalFile(bool alreadyLoaded) {
 	}
 }
 
-bool Journal::isPrintable(char ch) const {
+bool Journal::isPrintable(byte ch) const {
 	Talk &talk = *_vm->_talk;
 	const byte *opcodes = talk._opcodes;
 
diff --git a/engines/sherlock/journal.h b/engines/sherlock/journal.h
index 0bd277aced..bacd9fa8b5 100644
--- a/engines/sherlock/journal.h
+++ b/engines/sherlock/journal.h
@@ -76,7 +76,7 @@ protected:
 	/**
 	 * Returns true if a given character is printable
 	 */
-	bool isPrintable(char ch) const;
+	bool isPrintable(byte ch) const;
 public:
 	static Journal *init(SherlockEngine *vm);
 	virtual ~Journal() {}