diff --git a/apps/coremark/Makefile b/apps/coremark/Makefile
index 71a0f88a..f918baeb 100644
--- a/apps/coremark/Makefile
+++ b/apps/coremark/Makefile
@@ -1,3 +1,7 @@
 NAME = coremark
 SRCS = $(shell find -L ./src/ -name "*.c")
+ifdef ITERATIONS
+CFLAGS += -DITERATIONS=$(ITERATIONS)
+endif
+
 include $(AM_HOME)/Makefile.app
diff --git a/apps/coremark/include/core_portme.h b/apps/coremark/include/core_portme.h
index b1611769..869a39f2 100755
--- a/apps/coremark/include/core_portme.h
+++ b/apps/coremark/include/core_portme.h
@@ -8,7 +8,9 @@
 
 #include <klib.h>
 
+#ifndef ITERATIONS
 #define ITERATIONS 10
+#endif
 #define MEM_METHOD MEM_STATIC
 
 /************************/