diff --git a/src/lib_json/json_reader.cpp b/src/lib_json/json_reader.cpp
index d68af77..c5782b0 100644
--- a/src/lib_json/json_reader.cpp
+++ b/src/lib_json/json_reader.cpp
@@ -781,7 +781,11 @@ std::string Reader::getLocationLineAndColumn(Location location) const {
   getLocationLineAndColumn(location, line, column);
   char buffer[18 + 16 + 16 + 1];
 #if defined(_MSC_VER) && defined(__STDC_SECURE_LIB__)
+  #if defined(WINCE)
+  _snprintf(buffer, sizeof(buffer), "Line %d, Column %d", line, column);
+  #else
   sprintf_s(buffer, sizeof(buffer), "Line %d, Column %d", line, column);
+  #endif
 #else
   snprintf(buffer, sizeof(buffer), "Line %d, Column %d", line, column);
 #endif
diff --git a/src/lib_json/json_writer.cpp b/src/lib_json/json_writer.cpp
index cf61f01..46f32e1 100644
--- a/src/lib_json/json_writer.cpp
+++ b/src/lib_json/json_writer.cpp
@@ -73,7 +73,11 @@ std::string valueToString(double value) {
 #if defined(_MSC_VER) && defined(__STDC_SECURE_LIB__) // Use secure version with
                                                       // visual studio 2005 to
                                                       // avoid warning.
+  #if defined(WINCE)
+  _snprintf(buffer, sizeof(buffer), "%.16g", value);
+  #else
   sprintf_s(buffer, sizeof(buffer), "%.16g", value);
+  #endif
 #else
   snprintf(buffer, sizeof(buffer), "%.16g", value);
 #endif