diff --git a/inc/neopixel.h b/inc/neopixel.h
index cbb9f15..cfb01bb 100644
--- a/inc/neopixel.h
+++ b/inc/neopixel.h
@@ -12,7 +12,9 @@
 #include "NRF52PWM.h"
 #include "WS2812B.h"
 
-void neopixel_send_buffer(Pin &pin, const uint8_t *ptr, int numBytes);
-void neopixel_send_buffer(Pin &pin, ManagedBuffer buffer);
+namespace codal {
+    void neopixel_send_buffer(Pin &pin, const uint8_t *ptr, int numBytes);
+    void neopixel_send_buffer(Pin &pin, ManagedBuffer buffer);
+}
 
 #endif // CODAL_NEOPIXEL_H
diff --git a/source/neopixel.cpp b/source/neopixel.cpp
index f325141..a4e06e0 100644
--- a/source/neopixel.cpp
+++ b/source/neopixel.cpp
@@ -8,7 +8,7 @@ using namespace codal;
 
 #if CONFIG_ENABLED(HARDWARE_NEOPIXEL)
 
-void neopixel_send_buffer(Pin &pin, const uint8_t *ptr, int numBytes)
+void codal::neopixel_send_buffer(Pin &pin, const uint8_t *ptr, int numBytes)
 {
     static NRF52PWM *pwm = NULL;
     static WS2812B *ws = NULL;
@@ -29,7 +29,7 @@ void neopixel_send_buffer(Pin &pin, const uint8_t *ptr, int numBytes)
 
 #else
 
-__attribute__((noinline)) void neopixel_send_buffer(Pin &pin, const uint8_t *ptr, int numBytes)
+__attribute__((noinline)) void codal::neopixel_send_buffer(Pin &pin, const uint8_t *ptr, int numBytes)
 {
     pin.setDigitalValue(0);
 
@@ -88,7 +88,7 @@ __attribute__((noinline)) void neopixel_send_buffer(Pin &pin, const uint8_t *ptr
 }
 #endif
 
-void neopixel_send_buffer(Pin &pin, ManagedBuffer buffer)
+void codal::neopixel_send_buffer(Pin &pin, ManagedBuffer buffer)
 {
     codal::neopixel_send_buffer(pin, &buffer[0], buffer.length());
 }