diff --git a/ChangeLog.txt b/ChangeLog.txt
index 5e05a384..139bcca5 100644
--- a/ChangeLog.txt
+++ b/ChangeLog.txt
@@ -27,6 +27,11 @@ which speeds up the compression of RGB and CMYK JPEGs by 5-20% when using
 64-bit code and 0-3% when using 32-bit code, and the decompression of those
 images by 10-30% when using 64-bit code and 3-12% when using 32-bit code.
 
+[5] Fixed an "illegal instruction" error that occurred when djpeg from a
+SIMD-enabled libjpeg-turbo MIPS build was executed with the -nosmooth option on
+a MIPS machine that lacked DSPr2 support.  The MIPS SIMD routines for h2v1 and
+h2v2 merged upsampling were not properly checking for the existence of DSPr2.
+
 
 1.4.0
 =====
diff --git a/simd/jsimd_mips.c b/simd/jsimd_mips.c
index abcd19f5..cf87b32b 100644
--- a/simd/jsimd_mips.c
+++ b/simd/jsimd_mips.c
@@ -562,6 +562,8 @@ jsimd_h2v1_fancy_upsample (j_decompress_ptr cinfo,
 GLOBAL(int)
 jsimd_can_h2v2_merged_upsample (void)
 {
+  init_simd();
+
   if (BITS_IN_JSAMPLE != 8)
     return 0;
   if (sizeof(JDIMENSION) != 4)
@@ -576,6 +578,8 @@ jsimd_can_h2v2_merged_upsample (void)
 GLOBAL(int)
 jsimd_can_h2v1_merged_upsample (void)
 {
+  init_simd();
+
   if (BITS_IN_JSAMPLE != 8)
     return 0;
   if (sizeof(JDIMENSION) != 4)