diff --git a/lib/msun/src/s_csqrt.c b/lib/msun/src/s_csqrt.c
index ae38c6c44d6..18a7ae3e714 100644
--- a/lib/msun/src/s_csqrt.c
+++ b/lib/msun/src/s_csqrt.c
@@ -40,7 +40,7 @@ __FBSDID("$FreeBSD$");
  * gcc generates is acceptable, since the special cases have already been
  * handled.
  */
-#pragma	STDC CX_LIMITED_RANGE	on
+#pragma	STDC CX_LIMITED_RANGE	ON
 
 /* We risk spurious overflow for components >= DBL_MAX / (1 + sqrt(2)). */
 #define	THRESH	0x1.a827999fcef32p+1022
diff --git a/lib/msun/src/s_csqrtf.c b/lib/msun/src/s_csqrtf.c
index 6c70ac12a13..da7fe184709 100644
--- a/lib/msun/src/s_csqrtf.c
+++ b/lib/msun/src/s_csqrtf.c
@@ -39,7 +39,7 @@ __FBSDID("$FreeBSD$");
  * gcc generates is acceptable, since the special cases have already been
  * handled.
  */
-#pragma	STDC CX_LIMITED_RANGE	on
+#pragma	STDC CX_LIMITED_RANGE	ON
 
 float complex
 csqrtf(float complex z)
diff --git a/lib/msun/src/s_csqrtl.c b/lib/msun/src/s_csqrtl.c
index 5a5087f374e..dd18e1ef38e 100644
--- a/lib/msun/src/s_csqrtl.c
+++ b/lib/msun/src/s_csqrtl.c
@@ -40,7 +40,7 @@ __FBSDID("$FreeBSD$");
  * gcc generates is acceptable, since the special cases have already been
  * handled.
  */
-#pragma	STDC CX_LIMITED_RANGE	on
+#pragma	STDC CX_LIMITED_RANGE	ON
 
 /* We risk spurious overflow for components >= LDBL_MAX / (1 + sqrt(2)). */
 #define	THRESH	(LDBL_MAX / 2.414213562373095048801688724209698L)