diff --git a/build/win32/project/Makefile_agent b/build/win32/project/Makefile_agent
index cb38581..f419d09 100644
--- a/build/win32/project/Makefile_agent
+++ b/build/win32/project/Makefile_agent
@@ -81,6 +81,7 @@ OBJS = \
        ..\..\..\src\libs\zbxsysinfo\common\http_metrics.o \
        ..\..\..\src\libs\zbxhttp\punycode.o \
        ..\..\..\src\libs\zbxhttp\urlencode.o \
+       ..\..\..\src\libs\zbxhttp\charset.o \
        ..\..\..\src\libs\zbxsysinfo\agent\agent.o \
        ..\..\..\src\libs\zbxsysinfo\agent\modbus.o \
        ..\..\..\src\libs\zbxsysinfo\common\zbxsysinfo_common.o \
diff --git a/src/libs/zbxhttp/http.c b/src/libs/zbxhttp/http.c
index 3ebee33..df6812d 100644
--- a/src/libs/zbxhttp/http.c
+++ b/src/libs/zbxhttp/http.c
@@ -25,6 +25,7 @@
 #include "zbxstr.h"
 #include "zbxdbhigh.h"
 #include "zbxtime.h"
+#include "zbxthreads.h"

 #ifdef HAVE_LIBCURL

@@ -624,7 +625,7 @@ next_attempt:
                context->body.offset = 0;

                if (0 != attempt_interval && 1 < context->max_attempts)
-                       sleep((unsigned int)attempt_interval);
+                       zbx_sleep((unsigned int)attempt_interval);
        }
        while (0 < --context->max_attempts);