diff --git a/STM32F1/cores/maple/libmaple/stm32f1/performance/isrs.S b/STM32F1/cores/maple/libmaple/stm32f1/performance/isrs.S
index c638078..9252b0b 100644
--- a/STM32F1/cores/maple/libmaple/stm32f1/performance/isrs.S
+++ b/STM32F1/cores/maple/libmaple/stm32f1/performance/isrs.S
@@ -163,15 +163,14 @@ __default_handler:
 	.weak	__irq_tim1_cc
 	.globl	__irq_tim1_cc
 	.set	__irq_tim1_cc, __default_handler
-	.weak	__irq_tim2
-	.globl	__irq_tim2
-	.set	__irq_tim2, __default_handler
-	.weak	__irq_tim3
-	.globl	__irq_tim3
-	.set	__irq_tim3, __default_handler
-	.weak	__irq_tim4
-	.globl	__irq_tim4
-	.set	__irq_tim4, __default_handler
+
+	.weakref __irq_tim2, __default_handler
+	.globl  __irq_tim2
+	.weakref __irq_tim3, __default_handler
+	.globl  __irq_tim3
+	.weakref __irq_tim4, __default_handler
+	.globl  __irq_tim4	
+	
 	.weak	__irq_i2c1_ev
 	.globl	__irq_i2c1_ev
 	.set	__irq_i2c1_ev, __default_handler
diff --git a/STM32F1/platform.txt b/STM32F1/platform.txt
index 1ac7447..f9979c9 100644
--- a/STM32F1/platform.txt
+++ b/STM32F1/platform.txt
@@ -91,8 +91,8 @@ recipe.S.o.pattern="{compiler.path}{compiler.c.cmd}" {compiler.S.flags} -mcpu={b
 recipe.ar.pattern="{compiler.path}{compiler.ar.cmd}" {compiler.ar.flags} {compiler.ar.extra_flags} "{build.path}/{archive_file}" "{object_file}"
 
 ## Combine gc-sections, archives, and objects
-#recipe.c.combine.pattern="{compiler.path}{compiler.c.elf.cmd}" {compiler.c.elf.flags} -mcpu={build.mcu} "-T{build.variant.path}/{build.ldscript}" "-Wl,-Map,{build.path}/{build.project_name}.map" {compiler.c.elf.extra_flags} -o "{build.path}/{build.project_name}.elf" "-L{build.path}" -lm -lgcc -mthumb -Wl,--cref -Wl,--check-sections -Wl,--gc-sections -Wl,--unresolved-symbols=report-all -Wl,--warn-common -Wl,--warn-section-align -Wl,--warn-unresolved-symbols -Wl,--start-group {object_files} "{build.path}/{archive_file}" -Wl,--end-group
-recipe.c.combine.pattern="{compiler.path}{compiler.c.elf.cmd}" {compiler.c.elf.flags} -mcpu={build.mcu} "-T{build.variant.path}/{build.ldscript}" "-Wl,-Map,{build.path}/{build.project_name}.map" {compiler.c.elf.extra_flags} -o "{build.path}/{build.project_name}.elf" "-L{build.path}" -lm -lgcc -mthumb -Wl,--cref -Wl,--check-sections -Wl,--gc-sections -Wl,--unresolved-symbols=report-all -Wl,--warn-common -Wl,--warn-section-align -Wl,--warn-unresolved-symbols -Wl,--start-group {object_files} -Wl,--whole-archive "{build.path}/{archive_file}" -Wl,--no-whole-archive -Wl,--end-group
+recipe.c.combine.pattern="{compiler.path}{compiler.c.elf.cmd}" {compiler.c.elf.flags} -mcpu={build.mcu} "-T{build.variant.path}/{build.ldscript}" "-Wl,-Map,{build.path}/{build.project_name}.map" {compiler.c.elf.extra_flags} -o "{build.path}/{build.project_name}.elf" "-L{build.path}" -lm -lgcc -mthumb -Wl,--cref -Wl,--check-sections -Wl,--gc-sections -Wl,--unresolved-symbols=report-all -Wl,--warn-common -Wl,--warn-section-align -Wl,--warn-unresolved-symbols -Wl,--start-group {object_files} "{build.path}/{archive_file}" -Wl,--end-group
+#recipe.c.combine.pattern="{compiler.path}{compiler.c.elf.cmd}" {compiler.c.elf.flags} -mcpu={build.mcu} "-T{build.variant.path}/{build.ldscript}" "-Wl,-Map,{build.path}/{build.project_name}.map" {compiler.c.elf.extra_flags} -o "{build.path}/{build.project_name}.elf" "-L{build.path}" -lm -lgcc -mthumb -Wl,--cref -Wl,--check-sections -Wl,--gc-sections -Wl,--unresolved-symbols=report-all -Wl,--warn-common -Wl,--warn-section-align -Wl,--warn-unresolved-symbols -Wl,--start-group {object_files} -Wl,--whole-archive "{build.path}/{archive_file}" -Wl,--no-whole-archive -Wl,--end-group
 
 ## Create eeprom
 recipe.objcopy.eep.pattern=