diff --git a/src/stm32/spi.c b/src/stm32/spi.c
index 419c264a..90d71ffe 100644
--- a/src/stm32/spi.c
+++ b/src/stm32/spi.c
@@ -17,12 +17,14 @@ struct spi_info {
 
 DECL_ENUMERATION("spi_bus", "spi2", 0);
 DECL_CONSTANT_STR("BUS_PINS_spi2", "PB14,PB15,PB13");
-DECL_ENUMERATION("spi_bus", "spi2a", 1);
-DECL_CONSTANT_STR("BUS_PINS_spi2a", "PC2,PC3,PB10");
-DECL_ENUMERATION("spi_bus", "spi1", 2);
+DECL_ENUMERATION("spi_bus", "spi1", 1);
 DECL_CONSTANT_STR("BUS_PINS_spi1", "PA6,PA7,PA5");
+#if CONFIG_MACH_STM32F0 || CONFIG_MACH_STM32F4
+DECL_ENUMERATION("spi_bus", "spi2a", 2);
+DECL_CONSTANT_STR("BUS_PINS_spi2a", "PC2,PC3,PB10");
 DECL_ENUMERATION("spi_bus", "spi1a", 3);
 DECL_CONSTANT_STR("BUS_PINS_spi1a", "PB4,PB5,PB3");
+#endif
 #ifdef SPI3
 DECL_ENUMERATION("spi_bus", "spi3", 4);
 DECL_CONSTANT_STR("BUS_PINS_spi3", "PB4,PB5,PB3");
@@ -36,8 +38,8 @@ DECL_CONSTANT_STR("BUS_PINS_spi3a", "PC11,PC12,PC10");
 
 static const struct spi_info spi_bus[] = {
     { SPI2, GPIO('B', 14), GPIO('B', 15), GPIO('B', 13), SPI_FUNCTION },
-    { SPI2, GPIO('C', 2), GPIO('C', 3), GPIO('B', 10), SPI_FUNCTION },
     { SPI1, GPIO('A', 6), GPIO('A', 7), GPIO('A', 5), SPI_FUNCTION },
+    { SPI2, GPIO('C', 2), GPIO('C', 3), GPIO('B', 10), SPI_FUNCTION },
     { SPI1, GPIO('B', 4), GPIO('B', 5), GPIO('B', 3), SPI_FUNCTION },
 #ifdef SPI3
     { SPI3, GPIO('B', 4), GPIO('B', 5), GPIO('B', 3), GPIO_FUNCTION(6) },