diff --git a/targets/TARGET_Freescale/TARGET_KLXX/CMakeLists.txt b/targets/TARGET_Freescale/TARGET_KLXX/CMakeLists.txt
index 095f2777cb7..c3ccbf2866b 100644
--- a/targets/TARGET_Freescale/TARGET_KLXX/CMakeLists.txt
+++ b/targets/TARGET_Freescale/TARGET_KLXX/CMakeLists.txt
@@ -23,6 +23,7 @@ target_sources(mbed-klxx
         rtc_api.c
         sleep.c
         us_ticker.c
+        clk_freqs.c
 )
 
 target_link_libraries(mbed-klxx INTERFACE mbed-freescale)
diff --git a/targets/TARGET_Freescale/TARGET_KLXX/TARGET_KL25Z/CMakeLists.txt b/targets/TARGET_Freescale/TARGET_KLXX/TARGET_KL25Z/CMakeLists.txt
index 57381e585ec..e5645ea21a7 100644
--- a/targets/TARGET_Freescale/TARGET_KLXX/TARGET_KL25Z/CMakeLists.txt
+++ b/targets/TARGET_Freescale/TARGET_KLXX/TARGET_KL25Z/CMakeLists.txt
@@ -24,7 +24,6 @@ target_sources(mbed-kl25z
         mbed_overrides.c
         serial_api.c
         spi_api.c
-        clk_freqs.c
 
         device/system_MKL25Z4.c
         ${STARTUP_FILE}
diff --git a/targets/TARGET_Freescale/TARGET_KLXX/TARGET_KL46Z/CMakeLists.txt b/targets/TARGET_Freescale/TARGET_KLXX/TARGET_KL46Z/CMakeLists.txt
index c984480b1ac..bcc94bcc589 100644
--- a/targets/TARGET_Freescale/TARGET_KLXX/TARGET_KL46Z/CMakeLists.txt
+++ b/targets/TARGET_Freescale/TARGET_KLXX/TARGET_KL46Z/CMakeLists.txt
@@ -25,7 +25,6 @@ target_sources(mbed-kl46z
         mbed_overrides.c
         serial_api.c
         spi_api.c
-        clk_freqs.c
 
         device/system_MKL46Z4.c
         ${STARTUP_FILE}
diff --git a/targets/TARGET_Freescale/TARGET_KLXX/TARGET_KL46Z/clk_freqs.c b/targets/TARGET_Freescale/TARGET_KLXX/TARGET_KL46Z/clk_freqs.c
deleted file mode 100644
index 0265cbea849..00000000000
--- a/targets/TARGET_Freescale/TARGET_KLXX/TARGET_KL46Z/clk_freqs.c
+++ /dev/null
@@ -1,28 +0,0 @@
-/* mbed Microcontroller Library
-* Copyright (c) 2006-2013 ARM Limited
- * SPDX-License-Identifier: Apache-2.0
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-uint32_t mcgirc_frequency(void) {
-    uint32_t mcgirc_clock = 0;
-
-    if (MCG->C1 & MCG_C1_IREFSTEN_MASK) {
-        mcgirc_clock  = (MCG->C2 & MCG_C2_IRCS_MASK) ? 8000000u : 2000000u;
-        mcgirc_clock /= 1u + ((MCG->SC & MCG_SC_FCRDIV_MASK) >> MCG_SC_FCRDIV_SHIFT);
-        mcgirc_clock /= 1u +  (MCG->MC & MCG_MC_LIRC_DIV2_MASK);
-    }
-
-    return mcgirc_clock;
-}
\ No newline at end of file
diff --git a/targets/TARGET_Freescale/TARGET_KLXX/TARGET_KL46Z/clk_freqs.h b/targets/TARGET_Freescale/TARGET_KLXX/TARGET_KL46Z/clk_freqs.h
deleted file mode 100644
index 56370f7d7fb..00000000000
--- a/targets/TARGET_Freescale/TARGET_KLXX/TARGET_KL46Z/clk_freqs.h
+++ /dev/null
@@ -1,45 +0,0 @@
-/* mbed Microcontroller Library
- * Copyright (c) 2006-2013 ARM Limited
- * SPDX-License-Identifier: Apache-2.0
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-#ifndef MBED_CLK_FREQS_H
-#define MBED_CLK_FREQS_H
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-#include "PeripheralPins.h"
-
-//Get the peripheral bus clock frequency
-static inline uint32_t bus_frequency(void) {
-    return (SystemCoreClock / (((SIM->CLKDIV1 & SIM_CLKDIV1_OUTDIV4_MASK) >> SIM_CLKDIV1_OUTDIV4_SHIFT) + 1));
-}
-
-static inline uint32_t extosc_frequency(void) {
-    return CPU_XTAL_CLK_HZ;
-}
-
-static inline uint32_t fastirc_frequency(void) {
-    return CPU_INT_FAST_CLK_HZ;
-}
-
-uint32_t mcgirc_frequency(void);
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif
diff --git a/targets/TARGET_Freescale/TARGET_KLXX/TARGET_KL25Z/clk_freqs.c b/targets/TARGET_Freescale/TARGET_KLXX/clk_freqs.c
similarity index 100%
rename from targets/TARGET_Freescale/TARGET_KLXX/TARGET_KL25Z/clk_freqs.c
rename to targets/TARGET_Freescale/TARGET_KLXX/clk_freqs.c
diff --git a/targets/TARGET_Freescale/TARGET_KLXX/TARGET_KL25Z/clk_freqs.h b/targets/TARGET_Freescale/TARGET_KLXX/clk_freqs.h
similarity index 100%
rename from targets/TARGET_Freescale/TARGET_KLXX/TARGET_KL25Z/clk_freqs.h
rename to targets/TARGET_Freescale/TARGET_KLXX/clk_freqs.h