diff --git a/src/srm.cpp b/src/srm.cpp
index 46aeb2037..4cb45f0a6 100644
--- a/src/srm.cpp
+++ b/src/srm.cpp
@@ -148,7 +148,12 @@ bool readSrmFile(QFile &file, SrmData &data, QStringList &errorStrings)
 
     blockhdr *blockhdrs = new blockhdr[blockcnt];
     for (int i = 0; i < blockcnt; ++i) {
-        quint32 hsecsincemidn = readLong(in);
+        // In the .srm files generated by Rainer Clasen's srmcmd,
+        // hsecsincemidn is a *signed* 32-bit integer.  I haven't seen a
+        // negative value in any .srm files generated by srmwin.exe, but
+        // since the number of hundredths of a second in a day is << 2^31,
+        // it seems safe to always treat this number as signed.
+        qint32 hsecsincemidn = readLong(in);
         blockhdrs[i].chunkcnt = readShort(in);
         blockhdrs[i].dt = QDateTime(date);
         blockhdrs[i].dt = blockhdrs[i].dt.addMSecs(hsecsincemidn * 10);