diff --git a/src/platform/posix/include/platform/lib/clk.h b/src/platform/posix/include/platform/lib/clk.h
index 7d396330a0cb..a5d8066a027c 100644
--- a/src/platform/posix/include/platform/lib/clk.h
+++ b/src/platform/posix/include/platform/lib/clk.h
@@ -4,7 +4,7 @@
  */
 
 #define CLK_MAX_CPU_HZ CONFIG_SYS_CLOCK_HW_CYCLES_PER_SEC
-#define CPU_LPRO_FREQ_IDX 1
+#define CPU_LPRO_FREQ_IDX 0
 #define CPU_LOWEST_FREQ_IDX CPU_LPRO_FREQ_IDX
 
 /* This is not a platform function, it's defined in src/lib/clk.c.