diff --git a/firmware/target/arm/tms320dm320/spi-dm320.c b/firmware/target/arm/tms320dm320/spi-dm320.c
index b671bdb2c1..2dca324664 100644
--- a/firmware/target/arm/tms320dm320/spi-dm320.c
+++ b/firmware/target/arm/tms320dm320/spi-dm320.c
@@ -121,7 +121,6 @@ int spi_block_transfer(enum SPI_target target,
     /* Disable the clock */
     bitclr16(&IO_CLK_MOD2, CLK_MOD2_SIF0);
     
-    mutex_unlock(&spi_mtx);
     return 0;
 }