diff --git a/src/compiler/glsl/glsl_parser_extras.cpp b/src/compiler/glsl/glsl_parser_extras.cpp
index 31de7d22758..5a92cd716f1 100644
--- a/src/compiler/glsl/glsl_parser_extras.cpp
+++ b/src/compiler/glsl/glsl_parser_extras.cpp
@@ -2153,11 +2153,11 @@ can_skip_compile(struct gl_context *ctx, struct gl_shader *shader,
       if (ctx->Cache) {
          char buf[41];
          disk_cache_compute_key(ctx->Cache, source, strlen(source),
-                                shader->sha1);
-         if (disk_cache_has_key(ctx->Cache, shader->sha1)) {
+                                shader->disk_cache_sha1);
+         if (disk_cache_has_key(ctx->Cache, shader->disk_cache_sha1)) {
             /* We've seen this shader before and know it compiles */
             if (ctx->_Shader->Flags & GLSL_CACHE_INFO) {
-               _mesa_sha1_format(buf, shader->sha1);
+               _mesa_sha1_format(buf, shader->disk_cache_sha1);
                fprintf(stderr, "deferring compile of shader: %s\n", buf);
             }
             shader->CompileStatus = COMPILE_SKIPPED;
@@ -2295,9 +2295,9 @@ _mesa_glsl_compile_shader(struct gl_context *ctx, struct gl_shader *shader,
 
    if (ctx->Cache && shader->CompileStatus == COMPILE_SUCCESS) {
       char sha1_buf[41];
-      disk_cache_put_key(ctx->Cache, shader->sha1);
+      disk_cache_put_key(ctx->Cache, shader->disk_cache_sha1);
       if (ctx->_Shader->Flags & GLSL_CACHE_INFO) {
-         _mesa_sha1_format(sha1_buf, shader->sha1);
+         _mesa_sha1_format(sha1_buf, shader->disk_cache_sha1);
          fprintf(stderr, "marking shader: %s\n", sha1_buf);
       }
    }
diff --git a/src/compiler/glsl/shader_cache.cpp b/src/compiler/glsl/shader_cache.cpp
index 120712d2201..6819602aab7 100644
--- a/src/compiler/glsl/shader_cache.cpp
+++ b/src/compiler/glsl/shader_cache.cpp
@@ -124,7 +124,7 @@ shader_cache_write_program_metadata(struct gl_context *ctx,
       goto fail;
 
    for (unsigned i = 0; i < prog->NumShaders; i++) {
-      memcpy(cache_item_metadata.keys[i], prog->Shaders[i]->sha1,
+      memcpy(cache_item_metadata.keys[i], prog->Shaders[i]->disk_cache_sha1,
              sizeof(cache_key));
    }
 
@@ -204,7 +204,7 @@ shader_cache_read_program_metadata(struct gl_context *ctx,
 
    for (unsigned i = 0; i < prog->NumShaders; i++) {
       struct gl_shader *sh = prog->Shaders[i];
-      _mesa_sha1_format(sha1buf, sh->sha1);
+      _mesa_sha1_format(sha1buf, sh->disk_cache_sha1);
       ralloc_asprintf_append(&buf, "%s: %s\n",
                              _mesa_shader_stage_to_abbrev(sh->Stage), sha1buf);
    }
diff --git a/src/mesa/main/mtypes.h b/src/mesa/main/mtypes.h
index 203f365465f..e9d0fc37a62 100644
--- a/src/mesa/main/mtypes.h
+++ b/src/mesa/main/mtypes.h
@@ -52,6 +52,7 @@
 #include "util/u_idalloc.h"
 #include "util/simple_mtx.h"
 #include "util/u_dynarray.h"
+#include "util/mesa-sha1.h"
 #include "vbo/vbo.h"
 
 
@@ -2676,14 +2677,15 @@ struct gl_shader
    GLuint Name;  /**< AKA the handle */
    GLint RefCount;  /**< Reference count */
    GLchar *Label;   /**< GL_KHR_debug */
-   unsigned char sha1[20]; /**< SHA1 hash of pre-processed source */
    GLboolean DeletePending;
    bool IsES;              /**< True if this shader uses GLSL ES */
 
    enum gl_compile_status CompileStatus;
 
-   const GLchar *Source;  /**< Source code string */
+   /** SHA1 of the pre-processed source used by the disk cache. */
+   uint8_t disk_cache_sha1[SHA1_DIGEST_LENGTH];
 
+   const GLchar *Source;  /**< Source code string */
    const GLchar *FallbackSource;  /**< Fallback string used by on-disk cache*/
 
    GLchar *InfoLog;
diff --git a/src/mesa/main/shaderapi.c b/src/mesa/main/shaderapi.c
index 7d43c95aa9b..52cde5d1962 100644
--- a/src/mesa/main/shaderapi.c
+++ b/src/mesa/main/shaderapi.c
@@ -60,7 +60,6 @@
 #include "program/prog_parameter.h"
 #include "util/ralloc.h"
 #include "util/hash_table.h"
-#include "util/mesa-sha1.h"
 #include "util/crc32.h"
 #include "util/os_file.h"
 #include "util/simple_list.h"