--- as/arm.c
+++ as/arm.c
@@ -17839,7 +17839,7 @@
        {
          bfd_vma insn;
          bfd_vma encoded_addend;
-         bfd_vma addend_abs = abs (value);
+         bfd_vma addend_abs = abs ((int)value);
 
          /* Check that the absolute value of the addend can be
             expressed as an 8-bit constant plus a rotation.  */
@@ -17884,7 +17884,7 @@
 #endif
         {
           bfd_vma insn;
-          bfd_vma addend_abs = abs (value);
+          bfd_vma addend_abs = abs ((int)value);
 
           /* Check that the absolute value of the addend can be
              encoded in 12 bits.  */
@@ -17927,7 +17927,7 @@
 #endif
         {
           bfd_vma insn;
-          bfd_vma addend_abs = abs (value);
+          bfd_vma addend_abs = abs ((int)value);
 
           /* Check that the absolute value of the addend can be
              encoded in 8 bits.  */
@@ -17971,7 +17971,7 @@
 #endif
         {
           bfd_vma insn;
-          bfd_vma addend_abs = abs (value);
+          bfd_vma addend_abs = abs ((int)value);
 
           /* Check that the absolute value of the addend is a multiple of
              four and, when divided by four, fits in 8 bits.  */