diff --git a/src/HttpResponse.h b/src/HttpResponse.h
index 754b28b..6477777 100644
--- a/src/HttpResponse.h
+++ b/src/HttpResponse.h
@@ -29,10 +29,10 @@
 namespace uWS {
 
 /* Some pre-defined status constants to use with writeStatus */
-const char *HTTP_200_OK = "200 OK";
+static const char *HTTP_200_OK = "200 OK";
 
 /* The general timeout for HTTP sockets */
-const int HTTP_TIMEOUT_S = 10;
+static const int HTTP_TIMEOUT_S = 10;
 
 template <bool SSL>
 struct HttpResponse : public AsyncSocket<SSL> {
diff --git a/src/Loop.h b/src/Loop.h
index c2ac5d6..ff17ffa 100644
--- a/src/Loop.h
+++ b/src/Loop.h
@@ -122,7 +122,7 @@ public:
 };
 
 /* Can be called from any thread to run the thread local loop */
-void run() {
+inline void run() {
     Loop::defaultLoop()->run();
 }
 
diff --git a/src/Utilities.h b/src/Utilities.h
index 6ebd4cc..7c3243a 100644
--- a/src/Utilities.h
+++ b/src/Utilities.h
@@ -24,7 +24,7 @@
 namespace uWS {
 namespace utils {
 
-int u32toaHex(uint32_t value, char *dst) {
+inline int u32toaHex(uint32_t value, char *dst) {
     char palette[] = "0123456789abcdef";
     char temp[10];
     char *p = temp;
@@ -42,7 +42,7 @@ int u32toaHex(uint32_t value, char *dst) {
     return ret;
 }
 
-int u32toa(uint32_t value, char *dst) {
+inline int u32toa(uint32_t value, char *dst) {
     char temp[10];
     char *p = temp;
     do {