diff --git a/src/core/rthreads.h b/src/core/rthreads.h
index 0f4f0cf8b8a..e96f45c9395 100644
--- a/src/core/rthreads.h
+++ b/src/core/rthreads.h
@@ -254,41 +254,3 @@ static int run_thread4P5I2P2(_thread_proto4P5I2P2 fn, void *arg1, void *arg2,
 #endif
 }
 #endif
-
-/*
- * prototype: CURLcode curl_global_init(long flags) { ... }
- */
-#ifdef KSR_RTHREAD_NEED_4L
-typedef int (*_thread_proto4L)(long);
-struct _thread_args4L
-{
-	_thread_proto4L fn;
-	long arg1;
-	int *ret;
-};
-static void *run_thread_wrap4L(struct _thread_args4L *args)
-{
-	*args->ret = (*args->fn)(args->arg1);
-	return NULL;
-}
-
-static int run_thread4L(_thread_proto4L fn, long arg1)
-{
-#ifdef USE_TLS
-	pthread_t tid;
-	int ret;
-
-	if(likely(ksr_tls_threads_mode == 0
-			   || (ksr_tls_threads_mode == 1 && process_no > 0))) {
-		return fn(arg1);
-	}
-	pthread_create(&tid, NULL, (_thread_proto)run_thread_wrap4L,
-			&(struct _thread_args4L){fn, arg1, &ret});
-	pthread_join(tid, NULL);
-
-	return ret;
-#else
-	return fn(arg1)
-#endif
-}
-#endif
diff --git a/src/modules/http_async_client/http_multi.c b/src/modules/http_async_client/http_multi.c
index a0ee1c877cf..a57aba9c951 100644
--- a/src/modules/http_async_client/http_multi.c
+++ b/src/modules/http_async_client/http_multi.c
@@ -32,9 +32,6 @@
 #include "../../core/mem/mem.h"
 #include "../../core/ut.h"
 #include "../../core/hashes.h"
-#define KSR_RTHREAD_NEED_4L
-#define KSR_RTHREAD_SKIP_P
-#include "../../core/rthreads.h"
 #include "http_multi.h"
 
 extern int hash_size;
@@ -392,8 +389,7 @@ void set_curl_mem_callbacks(void)
 			break;
 		case 1:
 			LM_DBG("Initilizing cURL with sys malloc\n");
-			rc = run_thread4L(
-					(_thread_proto4L)curl_global_init, CURL_GLOBAL_ALL);
+			rc = curl_global_init(CURL_GLOBAL_ALL);
 			if(rc != 0) {
 				LM_ERR("Cannot initialize cURL: %d\n", rc);
 			}
diff --git a/src/modules/http_client/http_client.c b/src/modules/http_client/http_client.c
index 3cf662820f5..430933e23d2 100644
--- a/src/modules/http_client/http_client.c
+++ b/src/modules/http_client/http_client.c
@@ -64,9 +64,6 @@
 #include "../../core/lvalue.h"
 #include "../../core/pt.h" /* Process table */
 #include "../../core/kemi.h"
-#define KSR_RTHREAD_NEED_4L
-#define KSR_RTHREAD_SKIP_P
-#include "../../core/rthreads.h"
 
 #include "functions.h"
 #include "curlcon.h"
@@ -281,7 +278,7 @@ static int mod_init(void)
 	LM_DBG("init curl module\n");
 
 	/* Initialize curl */
-	if(run_thread4L((_thread_proto4L)&curl_global_init, CURL_GLOBAL_ALL)) {
+	if(curl_global_init(CURL_GLOBAL_ALL)) {
 		LM_ERR("curl_global_init failed\n");
 		return -1;
 	}
diff --git a/src/modules/xcap_client/xcap_client.c b/src/modules/xcap_client/xcap_client.c
index 4de2d367b63..ac77228bfde 100644
--- a/src/modules/xcap_client/xcap_client.c
+++ b/src/modules/xcap_client/xcap_client.c
@@ -41,9 +41,6 @@
 #include "../../core/mem/shm_mem.h"
 #include "../../core/rpc.h"
 #include "../../core/rpc_lookup.h"
-#define KSR_RTHREAD_NEED_4L
-#define KSR_RTHREAD_SKIP_P
-#include "../../core/rthreads.h"
 #include "../presence/utils_func.h"
 #include "xcap_functions.h"
 #include "xcap_client.h"
@@ -143,7 +140,7 @@ static int mod_init(void)
 	xcap_dbf.close(xcap_db);
 	xcap_db = NULL;
 
-	run_thread4L((_thread_proto4L)curl_global_init, CURL_GLOBAL_ALL);
+	curl_global_init(CURL_GLOBAL_ALL);
 
 	if(periodical_query) {
 		register_timer(query_xcap_update, 0, query_period);