diff --git a/c_gen/templates/_pragmas.c b/c_gen/templates/_pragmas.c
index 8494006..cbdc350 100644
--- a/c_gen/templates/_pragmas.c
+++ b/c_gen/templates/_pragmas.c
@@ -43,10 +43,6 @@
 #define __GNUC_PREREQ(maj, min) 0
 #endif
 
-#if __GNUC_PREREQ(4,4)
-#pragma GCC optimize ("s")
-#endif
-
 #if __GNUC_PREREQ(4,6)
 #pragma GCC diagnostic ignored "-Wunused-but-set-variable"
 #endif
diff --git a/c_gen/templates/locitest/Makefile b/c_gen/templates/locitest/Makefile
index 966fe9b..70e57ca 100644
--- a/c_gen/templates/locitest/Makefile
+++ b/c_gen/templates/locitest/Makefile
@@ -4,7 +4,7 @@
 LOCITEST_OBJS := $(LOCITEST_SRCS:.c=.o)
 LOCI_OBJS := $(LOCI_SRCS:.c=.o)
 
-CFLAGS := -Wall -Werror -g
+CFLAGS := -Wall -Werror -g -Os
 CFLAGS += -Iinc -I../loci/inc -I ../loci/src
 
 all: locitest