diff --git a/internal/wasm/sdk/opa/opa_test.go b/internal/wasm/sdk/opa/opa_test.go
index 3cdbbc6a39..9664aa1d06 100644
--- a/internal/wasm/sdk/opa/opa_test.go
+++ b/internal/wasm/sdk/opa/opa_test.go
@@ -225,6 +225,13 @@ a = "c" { input > 2 }`,
 				{Result: `{{}}`},
 			},
 		},
+		{
+			Description: "Runtime error/bad utf8 input to count()",
+			Policy:      `a = count(base64.decode("2E84ZuPUd7zfvCZSNEchVpDEIj6PL7JfLpIqyxVG16k="))`,
+			Query:       "data.p.a = x",
+			Evals:       []Eval{{}},
+			WantErr:     "internal_error: string: invalid unicode",
+		},
 	}
 
 	for _, test := range tests {
diff --git a/wasm/src/json.c b/wasm/src/json.c
index cb0fd3d3a6..56f9e89adf 100644
--- a/wasm/src/json.c
+++ b/wasm/src/json.c
@@ -1,5 +1,6 @@
 #include <stdio.h>
 
+#include "stdlib.h"
 #include "str.h"
 #include "value.h"
 #include "json.h"
diff --git a/wasm/src/lib/stdio.c b/wasm/src/lib/stdio.c
index b7bfb0c9f3..2698d3febf 100644
--- a/wasm/src/lib/stdio.c
+++ b/wasm/src/lib/stdio.c
@@ -2,6 +2,7 @@
 #include "printf.h"
 
 #include "../std.h"
+#include "stdlib.h"
 
 struct _FILE {};
 
diff --git a/wasm/src/lib/stdlib.c b/wasm/src/lib/stdlib.c
index 75532f627a..801b57cb70 100644
--- a/wasm/src/lib/stdlib.c
+++ b/wasm/src/lib/stdlib.c
@@ -15,6 +15,12 @@ void abort(void)
     }
 }
 
+void opa_abort(const char *msg)
+{
+    opa_abort_(msg);
+    __builtin_unreachable();
+}
+
 void *malloc(size_t size)
 {
     return opa_malloc(size);
diff --git a/wasm/src/lib/stdlib.h b/wasm/src/lib/stdlib.h
index 12b87cc25d..b5987b50b2 100644
--- a/wasm/src/lib/stdlib.h
+++ b/wasm/src/lib/stdlib.h
@@ -7,6 +7,8 @@
 extern "C" {
 #endif
 
+void opa_abort(const char *msg);
+__attribute__((import_name("opa_abort"))) void opa_abort_(const char *msg);
 void abort(void);
 void *malloc(size_t size);
 void free(void *ptr);
diff --git a/wasm/src/malloc.c b/wasm/src/malloc.c
index b1544f138c..17b4594ef3 100644
--- a/wasm/src/malloc.c
+++ b/wasm/src/malloc.c
@@ -1,5 +1,6 @@
 #include <string.h>
 #include "std.h"
+#include "stdlib.h"
 
 #define WASM_PAGE_SIZE (65536)
 
diff --git a/wasm/src/std.h b/wasm/src/std.h
index 7df5513320..72b9656222 100644
--- a/wasm/src/std.h
+++ b/wasm/src/std.h
@@ -11,7 +11,6 @@ extern "C" {
 #define container_of(ptr, type, member)                             \
     ((type *)(void *)( ((char *)(ptr) - offsetof(type, member) )))
 
-void opa_abort(const char *msg);
 void opa_println(const char *msg);
 
 #ifdef DEBUG
diff --git a/wasm/src/undefined.symbols b/wasm/src/undefined.symbols
index d518633126..8ed7e08cef 100644
--- a/wasm/src/undefined.symbols
+++ b/wasm/src/undefined.symbols
@@ -1,4 +1,3 @@
-opa_abort
 opa_println
 opa_builtin0
 opa_builtin1