diff --git a/libs/ardour/vst2_scan.cc b/libs/ardour/vst2_scan.cc
index b2b45ae169..14f0854fc3 100644
--- a/libs/ardour/vst2_scan.cc
+++ b/libs/ardour/vst2_scan.cc
@@ -638,12 +638,13 @@ touch_cachefile (std::string const& path, std::string const& cache_file, bool ve
 		if (0 != g_utime (cache_file.c_str (), &utb)) {
 			PBD::error << "Could not set cachefile timestamp." << endmsg;
 		} else if (verbose) {
+			const time_t mtime = sb_vst.st_mtime;
 			char v2itme[128];
 			char vsttme[128];
 			struct tm local_time;
 			localtime_r (&utb.modtime, &local_time);
 			strftime (v2itme, sizeof(v2itme), "%Y-%m-%d %T", &local_time);
-			localtime_r (&sb_vst.st_mtime, &local_time);
+			localtime_r (&mtime, &local_time);
 			strftime (vsttme, sizeof(vsttme), "%Y-%m-%d %T", &local_time);
 			PBD::info << "Touch cachefile: set mtime = "
 			          << utb.modtime << " (" << v2itme << "), plugin mtime = "
diff --git a/libs/ardour/vst3_scan.cc b/libs/ardour/vst3_scan.cc
index e703221d60..23a81e5fbb 100644
--- a/libs/ardour/vst3_scan.cc
+++ b/libs/ardour/vst3_scan.cc
@@ -421,12 +421,13 @@ touch_cachefile (std::string const& module_path, std::string const& cache_file,
 		if (0 != g_utime (cache_file.c_str (), &utb)) {
 			PBD::error << "Could not set cachefile timestamp." << endmsg;
 		} else if (verbose) {
+			const time_t mtime = sb_vst.st_mtime;
 			char v3itme[128];
 			char vsttme[128];
 			struct tm local_time;
 			localtime_r (&utb.modtime, &local_time);
 			strftime (v3itme, sizeof(v3itme), "%Y-%m-%d %T", &local_time);
-			localtime_r (&sb_vst.st_mtime, &local_time);
+			localtime_r (&mtime, &local_time);
 			strftime (vsttme, sizeof(vsttme), "%Y-%m-%d %T", &local_time);
 			PBD::info << "Touch cachefile: set mtime = "
 			          << utb.modtime << " (" << v3itme << "), plugin mtime = "