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-rw-r--r--controller/JSONDB.cpp2
1 files changed, 1 insertions, 1 deletions
diff --git a/controller/JSONDB.cpp b/controller/JSONDB.cpp
index 4747e470..044f791c 100644
--- a/controller/JSONDB.cpp
+++ b/controller/JSONDB.cpp
@@ -161,7 +161,7 @@ std::string JSONDB::_genPath(const std::string &n,bool create)
std::string p(_basePath);
if (create) OSUtils::mkdir(p.c_str());
- for(unsigned long i=0,j=pt.size()-1;i<j;++i) {
+ for(unsigned long i=0,j=(unsigned long)(pt.size()-1);i<j;++i) {
p.push_back(ZT_PATH_SEPARATOR);
p.append(pt[i]);
if (create) OSUtils::mkdir(p.c_str());