diff --git a/mach/mips/libem/c_ud_i.s b/mach/mips/libem/c_ud_i.s
index ed2c6479e..5af88483d 100644
--- a/mach/mips/libem/c_ud_i.s
+++ b/mach/mips/libem/c_ud_i.s
@@ -9,7 +9,7 @@
 	 * Only at and f30/f31 may be used.
 	 */
 
-	ori at, zero, hi16[.fd_80000000]
+	li at, ha16[.fd_80000000]
 	ldc1 f30, lo16[.fd_80000000] (at)
 	c.le.d 0, f30, f0
 	bc1t toobig
diff --git a/mach/mips/libem/c_uf_i.s b/mach/mips/libem/c_uf_i.s
index 8d7129cad..1a3c2a1f7 100644
--- a/mach/mips/libem/c_uf_i.s
+++ b/mach/mips/libem/c_uf_i.s
@@ -12,7 +12,7 @@
 	 * Only at and f30/f31 may be used.
 	 */
 
-	ori at, zero, hi16[.ff_80000000]
+	li at, ha16[.ff_80000000]
 	lwc1 f30, lo16[.ff_80000000] (at)
 	c.le.s 0, f30, f0
 	bc1t toobig
diff --git a/mach/mips/libem/c_ui_d.s b/mach/mips/libem/c_ui_d.s
index 0d339b702..ef987d50d 100644
--- a/mach/mips/libem/c_ui_d.s
+++ b/mach/mips/libem/c_ui_d.s
@@ -13,7 +13,7 @@
 	bgez r2, nonnegative
 	nop
 
-	ori at, zero, hi16[.fd_100000000]
+	li at, ha16[.fd_100000000]
 	ldc1 f30, lo16[.fd_100000000] (at)
 	add.d f0, f0, f30
 nonnegative:
diff --git a/mach/mips/libem/c_ui_f.s b/mach/mips/libem/c_ui_f.s
index 7c1a05d6a..f54179fb8 100644
--- a/mach/mips/libem/c_ui_f.s
+++ b/mach/mips/libem/c_ui_f.s
@@ -13,7 +13,7 @@
 	bgez r2, nonnegative
 	nop
 
-	ori at, zero, hi16[.fs_100000000]
+	li at, ha16[.fs_100000000]
 	ldc1 f30, lo16[.fs_100000000] (at)
 	add.d f0, f0, f30
 nonnegative: