4 files changed, 6 insertions, 6 deletions
diff --git a/src/libutil/hash.cc b/src/libutil/hash.cc
index a01d651e1ef5..9d82f13a5e38 100644
--- a/src/libutil/hash.cc
+++ b/src/libutil/hash.cc
@@ -82,7 +82,7 @@ static string printHash32(const Hash & hash)
     string s;
     s.reserve(len);
 
-    for (int n = len - 1; n >= 0; n--) {
+    for (int n = (int) len - 1; n >= 0; n--) {
         unsigned int b = n * 5;
         unsigned int i = b / 8;
         unsigned int j = b % 8;
diff --git a/src/libutil/serialise.hh b/src/libutil/serialise.hh
index d0b4552e3399..6e703c52a1e3 100644
--- a/src/libutil/serialise.hh
+++ b/src/libutil/serialise.hh
@@ -227,7 +227,7 @@ inline Sink & operator << (Sink & sink, uint64_t n)
     buf[4] = (n >> 32) & 0xff;
     buf[5] = (n >> 40) & 0xff;
     buf[6] = (n >> 48) & 0xff;
-    buf[7] = (n >> 56) & 0xff;
+    buf[7] = (unsigned char) (n >> 56) & 0xff;
     sink(buf, sizeof(buf));
     return sink;
 }
@@ -259,7 +259,7 @@ T readNum(Source & source)
     if (n > std::numeric_limits<T>::max())
         throw SerialisationError("serialised integer %d is too large for type '%s'", n, typeid(T).name());
 
-    return n;
+    return (T) n;
 }
 
 
diff --git a/src/libutil/xml-writer.cc b/src/libutil/xml-writer.cc
index 98bd058d18be..e5cc2e9fc719 100644
--- a/src/libutil/xml-writer.cc
+++ b/src/libutil/xml-writer.cc
@@ -28,7 +28,7 @@ void XMLWriter::close()
 }
 
 
-void XMLWriter::indent_(unsigned int depth)
+void XMLWriter::indent_(size_t depth)
 {
     if (!indent) return;
     output << string(depth * 2, ' ');
@@ -75,7 +75,7 @@ void XMLWriter::writeAttrs(const XMLAttrs & attrs)
 {
     for (auto & i : attrs) {
         output << " " << i.first << "=\"";
-        for (unsigned int j = 0; j < i.second.size(); ++j) {
+        for (size_t j = 0; j < i.second.size(); ++j) {
             char c = i.second[j];
             if (c == '"') output << "&quot;";
             else if (c == '<') output << "&lt;";
diff --git a/src/libutil/xml-writer.hh b/src/libutil/xml-writer.hh
index 3cefe3712c08..b98b445265a2 100644
--- a/src/libutil/xml-writer.hh
+++ b/src/libutil/xml-writer.hh
@@ -44,7 +44,7 @@ public:
 private:
     void writeAttrs(const XMLAttrs & attrs);
 
-    void indent_(unsigned int depth);
+    void indent_(size_t depth);
 };