diff --git a/rpi_pixleds.c b/rpi_pixleds.c
index f561aac..1e45941 100644
--- a/rpi_pixleds.c
+++ b/rpi_pixleds.c
@@ -70,8 +70,8 @@
 #endif
 
 // Structures for mapped I/O devices, and non-volatile memory
-extern MEM_MAP gpio_regs, dma_regs;
-MEM_MAP vc_mem, clk_regs, smi_regs;
+extern MEM_MAP gpio_regs, dma_regs, clk_regs;
+MEM_MAP vc_mem, smi_regs;
 
 // Pointers to SMI registers
 volatile SMI_CS_REG  *smi_cs;