diff --git a/thirdparty/vschannel/vschannel.c b/thirdparty/vschannel/vschannel.c
index 0d55dde7e8..51d4e61a68 100644
--- a/thirdparty/vschannel/vschannel.c
+++ b/thirdparty/vschannel/vschannel.c
@@ -877,7 +877,7 @@ static SECURITY_STATUS https_make_request(TlsContext *tls_ctx, CHAR *req, CHAR *
 		// increase buffer size if we need
 		int required_length = *length+(int)pDataBuffer->cbBuffer;
 		if( required_length > buff_size ) {
-			CHAR *a = realloc(*out, required_length);
+			CHAR *a = VSCHANNEL_REALLOC(*out, required_length);
 			if( a == NULL ) {
 				scRet = SEC_E_INTERNAL_ERROR;
 				return scRet;
diff --git a/thirdparty/vschannel/vschannel.h b/thirdparty/vschannel/vschannel.h
index 0338645c58..2587ef1a1c 100644
--- a/thirdparty/vschannel/vschannel.h
+++ b/thirdparty/vschannel/vschannel.h
@@ -20,6 +20,10 @@
 // Define here to be sure
 #define SP_PROT_TLS1_2_CLIENT 0x00000800
 
+#if !defined(VSCHANNEL_REALLOC)
+#define VSCHANNEL_REALLOC realloc
+#endif
+
 typedef struct TlsContext TlsContext;
 
 TlsContext new_tls_context();
diff --git a/vlib/net/http/backend_windows.c.v b/vlib/net/http/backend_windows.c.v
index 49de426187..51f6a35582 100644
--- a/vlib/net/http/backend_windows.c.v
+++ b/vlib/net/http/backend_windows.c.v
@@ -3,6 +3,10 @@
 // that can be found in the LICENSE file.
 module http
 
+$if gcboehm ? {
+	#define VSCHANNEL_REALLOC GC_REALLOC
+}
+
 #flag windows -I @VEXEROOT/thirdparty/vschannel
 #flag -l ws2_32 -l crypt32 -l secur32 -l user32
 #include "vschannel.c"