diff --git a/Makefile.mk b/Makefile.mk
index 7da6f08b3..3a6fbd097 100644
--- a/Makefile.mk
+++ b/Makefile.mk
@@ -206,7 +206,8 @@ TARGET_CPU = $(strip $(if $(filter linux,$(TARGET_SYSTEM)), x64, \
 # Warnings
 CFLAGS_WARNINGS ?= -Wall -Wextra -Wpedantic -Wlogical-op -Winline \
                    -Wformat-nonliteral -Winit-self -Wstack-protector \
-                   -Wconversion -Wsign-conversion -Wformat-security
+                   -Wconversion -Wsign-conversion -Wformat-security \
+                   -Wno-attributes
 CFLAGS_WERROR ?= -Werror
 CFLAGS_WFATAL_ERRORS ?= -Wfatal-errors
 
diff --git a/src/globals.h b/src/globals.h
index 321bdb391..47b689360 100644
--- a/src/globals.h
+++ b/src/globals.h
@@ -37,7 +37,7 @@ typedef unsigned long mword_t;
 #define __noinline __attribute__((noinline))
 #define __used __attribute__((used))
 #ifndef __attribute_always_inline__
-# define __attribute_always_inline__ __attribute__((always_inline)) __used
+# define __attribute_always_inline__ __attribute__((always_inline))
 #endif /* !__attribute_always_inline__ */
 #ifndef __attribute_const__
 # define __attribute_const__ __attribute__((const))
diff --git a/src/libecmaobjects/ecma-lcache.c b/src/libecmaobjects/ecma-lcache.c
index 82489c5a1..10acf6ead 100644
--- a/src/libecmaobjects/ecma-lcache.c
+++ b/src/libecmaobjects/ecma-lcache.c
@@ -218,7 +218,7 @@ ecma_lcache_insert (ecma_object_t *object_p, /**< object */
  * @return true - if (object, property name) pair is registered in LCache,
  *         false - probably, not registered.
  */
-inline bool __attribute_always_inline__
+bool __attribute_always_inline__
 ecma_lcache_lookup (ecma_object_t *object_p, /**< object */
                     const ecma_string_t *prop_name_p, /**< property's name */
                     ecma_property_t **prop_p_p) /**< out: if return value is true,
diff --git a/src/libecmaobjects/ecma-stack.c b/src/libecmaobjects/ecma-stack.c
index 8dbc615a0..7cf9db35d 100644
--- a/src/libecmaobjects/ecma-stack.c
+++ b/src/libecmaobjects/ecma-stack.c
@@ -207,7 +207,7 @@ ecma_stack_push_value (ecma_stack_frame_t *frame_p, /**< ecma-stack frame */
 /**
  * Get top value from ecma-stack
  */
-inline void __attribute_always_inline__
+void __attribute_always_inline__
 ecma_stack_top_value (ecma_value_t &ret, /**< out: ecma-value */
                       ecma_stack_frame_t *frame_p) /**< ecma-stack frame */
 {