diff --git a/src/tools/locale/DefaultCatalog.cpp b/src/tools/locale/DefaultCatalog.cpp
index 1f480cbd2b..d1a44f46e0 100644
--- a/src/tools/locale/DefaultCatalog.cpp
+++ b/src/tools/locale/DefaultCatalog.cpp
@@ -151,7 +151,8 @@ DefaultCatalog::ReadFromFile(const char *path)
 
 	BStackOrHeapArray<char, 0> buf(sz);
 	if (!buf.IsValid()) {
-		fprintf(stderr, "couldn't allocate array of %Ld chars\n", sz);
+		fprintf(stderr, "couldn't allocate array of %" B_PRIdOFF " chars\n",
+			sz);
 		return B_NO_MEMORY;
 	}
 	res = catalogFile.Read(buf, sz);
@@ -161,8 +162,9 @@ DefaultCatalog::ReadFromFile(const char *path)
 	}
 	if (res < sz) {
 		fprintf(stderr,
-			"only got %u instead of %Lu bytes from catalog-file %s\n", res, sz,
-			path);
+			"only got %u instead of %" B_PRIdOFF " bytes "
+			"from catalog-file %s\n",
+			res, sz, path);
 		return res;
 	}
 	BMemoryIO memIO(buf, sz);
diff --git a/src/tools/locale/collectcatkeys.cpp b/src/tools/locale/collectcatkeys.cpp
index 78ded2deb6..e14d6d5a6a 100644
--- a/src/tools/locale/collectcatkeys.cpp
+++ b/src/tools/locale/collectcatkeys.cpp
@@ -287,7 +287,8 @@ main(int argc, char **argv)
 		char *buf = inputStr.LockBuffer(sz);
 		off_t rsz = inFile.Read(buf, sz);
 		if (rsz < sz) {
-			fprintf(stderr, "couldn't read %Ld bytes from %s (got only %Ld)\n",
+			fprintf(stderr, "couldn't read %" B_PRIdOFF " bytes from %s "
+				"(got only %" B_PRIdOFF ")\n",
 				sz, inputFile, rsz);
 			exit(-1);
 		}